Comprehensive Vocabulary Study Notes: Units 1, 2, and 3
Study Guide Scope and Word Categorization Criteria
Study Guide Overview:
This comprehensive reference guide covers vocabulary across Units 1, 2, and 3 from the Sadlier-Oxford vocabulary series.
Two tiers of vocabulary study are established based on visual markup criteria:
Pink-Highlighted Terms: For each word marked with pink highlighter, analysis requires five mandatory linguistic elements:
Part of Speech: Grammatical categorization (noun, verb, adjective, etc.).
Pronunciation and Stress Mark Placement: Exact phonetic transcription and syllable stress location (including specific letter/syllable markers).
Definition: Verbatim meaning and contextual explanations.
Synonyms: Complete catalog of textbook synonyms and handwritten additions.
Antonyms: Textbook antonyms and annotated opposites.
Non-Highlighted Terms: Focus primarily on complete definitions and meanings, accompanied by illustrative sentences, syllabic notes, and associated annotations.
Unit 1 Vocabulary Study

Pink-Highlighted Priority Focus Term:
adjacent
Part of Speech: Adjective ()
Pronunciation & Stress Mark:
(ǝ jās' ǝnt)— Primary stress is placed on the second syllable (jās'). Marginal study note specifies: "study 1–5 second syllable" and defines placement as "next to".Definition: Near, next to, adjoining.
Synonyms: Alongside, nearby, neighboring.
Antonyms: Faraway, distant.
Illustrative Context: Boston and its adjacent suburbs were severely flooded after three days of heavy rain.
Standard Unit 1 Terms (Meanings and Detailed Notes):
alight
(ǝ līt'):Definitions: (verb) To get down from, step down from; to come down from the air, land; (adjective) lighted up.
Stress & Syllable Notes: Primary stress on the last/second syllable (
līt'). Marginal notation confirms: "last syllable", "Second Syllable", distinguishing verb and adjective uses.Synonyms: (v.) Dismount, land, touch down.
Antonyms: (v.) Mount, board, take off.
Illustrative Context: The passengers hurried to alight from the small airplane. / The sky was alight with a red glow as the fire raged in the distance.
barren
(bar' ǝn):Definition: (adjective) Not productive, bare.
Stress & Syllable Notes: Primary stress on the first syllable (
bar'). Annotated with: "bare", "1st sylla".Synonyms: Unproductive, sterile, desolate, arid.
Antonyms: Fertile, fruitful.
Illustrative Context: In contrast to the rich land we left behind, the plains appeared to be a barren landscape.
disrupt
(dis rǝpt'):Definition: (verb) To break up, disturb.
Stress & Syllable Notes: Primary stress on the second syllable (
rǝpt'). Annotated with: "second Syllable".Synonyms: Upset, displace, disorder.
Antonyms: Organize, arrange.
Illustrative Context: Even the loud demonstration on the street below was not enough to disrupt the meeting.
dynasty
(dī' nǝ stē):Definition: (noun) A powerful family or group of rulers that maintains its position or power for some time.
Stress & Syllable Notes: Primary stress on the first syllable (
dī'). Annotated with: "first syllable".Synonyms: Ruling house, regime.
Illustrative Context: The Han dynasty of China was in power for about .
foretaste
(fôr' tāst):Definition: (noun) An advance indication, sample, or warning.
Stress & Syllable Notes: Primary stress on the first syllable (
fôr'). Annotated with: "first syllable".Synonyms: Preview, anticipation.
Illustrative Context: The eye-opening first scene of the new play gave the audience a foretaste of things to come.
germinate
(jǝr' mǝ nāt):Definition: (verb) To begin to grow, come into being.
Stress & Syllable Notes: Primary stress on the first syllable (
jǝr'). Marginal annotation reads: "in = 2nd syllable" alongside a smiley face.Synonyms: Sprout, shoot up, burgeon.
Antonyms: Wither, die, stagnate, shrivel up.
Illustrative Context: After he interrogated the suspect, suspicion began to germinate in the inspector's mind.
humdrum
(hǝm' drǝm):Definition: (adjective) Ordinary, dull, routine, without variation.
Stress & Syllable Notes: Primary stress on the first syllable (
hǝm'). Annotated with: "boring" and "ordinary, dull, routine, without variation -> boring".Synonyms: Monotonous, prosaic, boring.
Antonyms: Exciting, thrilling, exhilarating.
Illustrative Context: All household tasks are humdrum according to my brother, who never helps with them.
hurtle
(hǝr' tǝl):Definition: (verb) To rush violently, dash headlong; to fling or hurl forcefully.
Stress & Syllable Notes: Primary stress on the first syllable (
hǝr'). Annotated with the Arabic gloss "استعجل" (meaning to hurry/rush), a star symbol, and the numeral "1".Synonyms: Speed, fly, catapult, fling.
Antonyms: Crawl, creep.
Illustrative Context: After separating from its booster rocket, the capsule began to hurtle through space.
insinuate
(in sin' yü āt):Definition: (verb) To suggest or hint slyly; to edge into something indirectly.
Stress & Syllable Notes: Primary stress on the second syllable (
sin'). Marginal notes include: "2", "indirectly", "hint", and "to accuse you in a tricky way".Synonyms: Imply.
Antonyms: Barge in, broadcast.
Illustrative Context: The attorney attempted to insinuate that the witness's testimony was false.
interminable
(in tǝr' mǝ nǝ bǝl):Definition: (adjective) Endless, so long as to seem endless.
Stress & Syllable Notes: Primary stress on the second syllable (
tǝr'). Annotated with the numeral "2" and a smiley face.Synonyms: Never-ending.
Antonyms: Brief, short, fleeting.
Illustrative Context: We had an interminable wait in the hot, crowded train station.
interrogate
(in ter' ǝ gāt):Definition: (verb) To ask questions, examine by questioning.
Stress & Syllable Notes: Primary stress on the second syllable (
ter').Synonyms: Question, query.
Illustrative Context: Two detectives helped the young, inexperienced officer to interrogate the suspect.
recompense
(rek' ǝm pens):Definition: (verb) To pay back; to give a reward; (noun) a payment for loss, service, or injury.
Stress & Syllable Notes: Primary stress on the first syllable (
rek'). Marked with numeral "1" and a star symbol.Synonyms: (v.) Repay; (n.) compensation.
Illustrative Context: My grandparents were happy to recompense the little girl who found their lost puppy. / As recompense, the landlord offered all tenants a month free of rent.
renovate
(ren' ǝ vāt):Definition: (verb) To repair, restore to good condition, make new again.
Stress & Syllable Notes: Primary stress on the first syllable (
ren').Synonyms: Repair, recondition.
Illustrative Context: The young couple brought in an architect and a contractor to help them renovate the old house.
résumé
(rez' ǝ mā):Definition: (noun) A brief summary; a short written account of one's education, working experience, or qualifications for a job.
Stress & Syllable Notes: Primary stress on the first syllable (
rez').Synonyms: Synopsis.
Illustrative Context: The job applicant gave a copy of her resume to the person in charge of the employment agency.
sullen
(sǝl' ǝn):Definition: (adjective) Silent or brooding because of ill humor, anger, or resentment; slow moving, sluggish.
Stress & Syllable Notes: Primary stress on the first syllable (
sǝl').Synonyms: Grumpy, surly, peevish, morose.
Antonyms: Cheerful, blithe, vivacious.
Illustrative Context: The sullen student sat down in the back of the classroom.
trickle
(trik' ǝl):Definition: (verb) To flow or fall by drops or in a small stream; (noun) a small, irregular quantity of anything.
Stress & Syllable Notes: Primary stress on the first syllable (
trik').Synonyms: (v.) Dribble, drizzle, drip; (n.) small amount.
Antonyms: (v.) Gush, pour, flood; (n.) deluge.
Illustrative Context: The water began to trickle from the rusty old pipe. / The runoff, which is quite heavy in the spring, dwindles to a trickle by late summer.
trivial
(triv' ē ǝl):Definition: (adjective) Not important, minor; ordinary, commonplace.
Stress & Syllable Notes: Primary stress on the first syllable (
triv'). Annotated with real-world examples: "ex: minor tasks to her student" and "ex: Anyone teacher tell minor tasks to her student".Synonyms: Insignificant, trifling.
Antonyms: Important, weighty.
Illustrative Context: The general left all trivial details to subordinate officers.
truce
(trüs):Definition: (noun) A pause in fighting, temporary peace.
Stress & Syllable Notes: Single syllable term. Annotated with handwritten text: "Backe".
Synonyms: Cease-fire.
Antonyms: War, warfare.
Illustrative Context: After tense negotiations, the warring nations reluctantly agreed to a five-day truce.
vicious
(vish' ǝs):Definition: (adjective) Evil, bad; spiteful; having bad habits or an ugly disposition; painfully severe or extreme.
Stress & Syllable Notes: Primary stress on the first syllable (
vish').Synonyms: Wicked, malicious.
Antonyms: Good, kind, kindly, mild.
Illustrative Context: The vicious rumor was damaging to their budding friendship.
Unit 2 Vocabulary Study

Pink-Highlighted Priority Focus Terms:
customary
Part of Speech: Adjective ()
Pronunciation & Stress Mark:
(kǝs' tǝ mer ē)— Primary stress is on the first syllable (kǝs'). Marginal annotation reads: "After(s)".Definition: Usual, expected, routine.
Synonyms: Regular, normal, traditional.
Antonyms: Strange, odd, untraditional.
Illustrative Context: The customary tip given to a waiter for service is of the bill.
dissuade
Part of Speech: Verb ()
Pronunciation & Stress Mark:
(di swād')— Primary stress is on the second syllable (swād'). Marginal annotation reads: "After (d)".Definition: To persuade not to do something.
Synonyms: Talk out of.
Antonyms: Persuade, talk into.
Illustrative Context: Despite offering big raises and bonuses, the boss was unable to dissuade workers from quitting.
firebrand
Part of Speech: Noun ()
Pronunciation & Stress Mark:
(fī' ǝr brand)— Primary stress is on the first syllable (fī'). Marginal annotation reads: "After (i)".Definition: A piece of burning wood; a troublemaker; an extremely energetic or emotional person.
Synonyms: Hothead, agitator.
Antonyms: Peacemaker, pacifier, conciliator.
Illustrative Context: A rash young firebrand, the new editor of the newspaper strove to expose corruption in the mayor's office.
indifference
Part of Speech: Noun ()
Pronunciation & Stress Mark:
(in dif' rǝns)— Primary stress is on the second syllable (dif'). Marginal annotation reads: "After f".Definition: A lack of interest or concern.
Synonyms: Apathy, unconcern.
Antonyms: Interest, concern, enthusiasm.
Illustrative Context: The outcome of the rugby match between the two teams is a matter of complete indifference to me.
indignant
Part of Speech: Adjective ()
Pronunciation & Stress Mark:
(in dig' nǝnt)— Primary stress is on the second syllable (dig'). Marginal annotation reads: "After (g)".Definition: Filled with resentment or anger over something unjust, unworthy, or mean.
Synonyms: Offended, resentful, outraged, exasperated.
Antonyms: Pleased, delighted, elated.
Illustrative Context: Angered by the editorial in the newspaper, my mother wrote an indignant letter to the editor.
plague
Part of Speech: Noun () and Verb ()
Pronunciation & Stress Mark:
(plāg)— Single syllable word (no separate unstressed syllables). Annotated with: "After", "Nothing".Definition: (noun) An easily spread disease causing a large number of deaths; a widespread evil; (verb) to annoy or bother.
Synonyms: (n.) Epidemic, pestilence; (v.) pester, vex.
Antonyms: (n.) Boon, blessing.
Illustrative Context: In the 14th century, a plague spread by infected rats wiped out about of the population of Europe. / Mosquitoes will plague the campers if they forget to wear insect repellent on the hike.
Standard Unit 2 Terms (Meanings and Detailed Notes):
available
(ǝ vā' lǝ bǝl):Definition: (adjective) Ready for use, at hand.
Stress & Syllable Notes: Primary stress on the second syllable (
vā').Synonyms: Obtainable, on hand.
Antonyms: Unobtainable, not to be had.
Illustrative Context: Bean sprouts and bean curd are available at the Chinese market on Main Street.
cater
(kā' tǝr):Definition: (verb) To satisfy the needs of, try to make things easy and pleasant; to supply food and service.
Stress & Syllable Notes: Primary stress on the first syllable (
kā').Synonyms: Pamper, indulge, gratify.
Antonyms: Frustrate, deny, refuse.
Illustrative Context: Our grandmother cared for the twins all summer, but she refused to cater to their every whim.
entrepreneur
(än trǝ prǝ nǝr'):Definition: (noun) A person who starts up and takes on the risk of a business.
Stress & Syllable Notes: Primary stress on the fourth syllable (
nǝr').Synonyms: Businessperson.
Illustrative Context: In the first year of business, an entrepreneur often assumes losses for the sake of future profits.
hazard
(haz' ǝrd):Definition: (noun) Risk, peril; (verb) to expose to danger or harm; to gamble.
Stress & Syllable Notes: Primary stress on the first syllable (
haz'). Top margin contains numerical annotations: "0.50$", "0.5%", and "WOW".Synonyms: (n.) Danger; (v.) venture.
Illustrative Context: Snow tires can help eliminate the hazard of driving on icy roads. / When asked to predict when the long drought would end, the meteorologist would not hazard a guess.
hinder
(hin' dǝr):Definition: (verb) To delay; to stop or prevent from happening.
Stress & Syllable Notes: Primary stress on the first syllable (
hin').Synonyms: Interrupt, impede, block, thwart.
Antonyms: Encourage, further.
Illustrative Context: The all-day rain predicted for tomorrow will definitely hinder our plans for a picnic at the lake.
homicide
(häm' ǝ sīd):Definition: (noun) The killing of one person by another.
Stress & Syllable Notes: Primary stress on the first syllable (
häm').Synonyms: Manslaughter.
Illustrative Context: It did not take the jury members too long to find the drifter guilty of homicide.
indispensable
(in di spen' sǝ bǝl):Definition: (adjective) Absolutely necessary, not to be neglected.
Stress & Syllable Notes: Primary stress on the third syllable (
spen'). Marked with annotation: "3 S".Synonyms: Essential, crucial.
Antonyms: Unnecessary, nonessential.
Illustrative Context: Oxygen is a gas that is indispensable to life processes on this planet.
lubricate
(lü' brǝ kāt):Definition: (verb) To apply oil or grease; to make smooth, slippery, or easier to use.
Stress & Syllable Notes: Primary stress on the first syllable (
lü'). Marginal notes include: "1st S", "grease", and "Jelly".Synonyms: Oil, grease.
Illustrative Context: The workers had to lubricate the equipment regularly so that production would not suffer.
mutual
(myü' chü ǝl):Definition: (adjective) Shared, felt, or shown equally by two or more.
Stress & Syllable Notes: Primary stress on the first syllable (
myü').Synonyms: Two-sided, joint, shared, reciprocal.
Antonyms: One-sided, unilateral (marked with explicit note: "-> memorize").
Illustrative Context: During the course of the summer, the adoring couple formed a mutual admiration society.
pelt
(pelt):Definition: (verb) To throw a stream of things; to strike successively; to hurry.
Stress & Syllable Notes: Single syllable term.
Synonyms: Bombard, shower.
Illustrative Context: The children resisted the urge to pelt passing cars with snowballs.
poised
(poizd):Definition: (adjective, participle) Balanced, suspended; calm, controlled; ready for action.
Stress & Syllable Notes: Monosyllabic pronunciation.
Synonyms: Collected, self-confident, ready.
Antonyms: Nervous, tense.
Illustrative Context: The captain and other members of the crew were poised for takeoff.
regime
(rā zhēm'):Definition: (noun) A government in power; a form or system of rule or management; a period of rule.
Stress & Syllable Notes: Primary stress on the second syllable (
zhēm').Synonyms: Rule.
Illustrative Context: The present regime in that country came to power through democratic elections.
transparent
(trans par' ǝnt):Definition: (adjective) Allowing light to pass through; easily recognized or understood; easily seen through or detected.
Stress & Syllable Notes: Primary stress on the second syllable (
par').Synonyms: Clear, translucent, obvious.
Antonyms: Frosted, sooty, smoky, unclear, indistinct.
Illustrative Context: The students could see the other class through the transparent glass door.
unscathed
(ǝn skāthd'):Definition: (adjective) Wholly unharmed, not injured.
Stress & Syllable Notes: Primary stress on the second syllable (
skāthd').Synonyms: Unhurt, sound, intact.
Antonyms: Injured, damaged, hurt.
Illustrative Context: Remarkably, the captain and the entire crew emerged from the wreck unscathed.
Unit 3 Vocabulary Study

Pink-Highlighted Priority Focus Terms:
culminate
Part of Speech: Verb ()
Pronunciation & Stress Mark:
(kǝl' mǝ nāt)— Primary stress is on the first syllable (kǝl'). Marginal annotation reads: "After (l)".Definition: To reach a high point of development; to end, climax.
Synonyms: Conclude, terminate.
Antonyms: Begin, initiate, kick off, commence.
Illustrative Context: The president's military advisors hoped the overseas action would not culminate in disaster.
literate
Part of Speech: Adjective ()
Pronunciation & Stress Mark:
(lit' ǝ rǝt)— Primary stress is on the first syllable (lit'). Marginal annotation reads: "after (T)" alongside a smiley face.Definition: Able to read and write; showing an excellent educational background; having knowledge or training.
Synonyms: Educated, trained (annotated).
Antonyms: Unlettered, ignorant, unschooled (annotated).
Illustrative Context: Compared with others in the colonial settlement, she was a highly literate young woman.
luster
Part of Speech: Noun ()
Pronunciation & Stress Mark:
(lǝs' tǝr)— Primary stress is on the first syllable (lǝs'). Marginal annotation reads: "after (S)" alongside a smiley face.Definition: The quality of giving off light, brightness, glitter.
Synonyms: Gloss, sheen, shine, brilliance (annotated).
Antonyms: Tarnish, dullness.
Illustrative Context: The polished gold dome atop the state capitol shone with a starry luster.
miscellaneous
Part of Speech: Adjective ()
Pronunciation & Stress Mark:
(mis ǝ lā' nē ǝs)— Primary stress is on the third syllable (lā'). Marginal annotation reads: "after (a)" alongside a smiley face.Definition: Mixed, of different kinds.
Synonyms: Varied, assorted, motley.
Antonyms: Identical, uniform, homogeneous.
Illustrative Context: A collection of miscellaneous items was gathering dust in the attic.
Standard Unit 3 Terms (Meanings and Detailed Notes):
animated
(an' ǝ māt id):Definitions: (adjective) Full of life, lively, alive; (participle) moved to action.
Stress & Syllable Notes: Primary stress on the first syllable (
an'). Annotated with: "after (N)".Synonyms: (adj.) Energetic, vigorous.
Antonyms: (adj.) Lifeless, dead, flat.
Illustrative Context: After the game the sportscaster found the winning team to be in an animated mood.
brood
(brüd):Definitions: (noun) A family of young animals, especially birds; any group having the same nature and origin; (verb) to think over in a worried, unhappy way.
Stress & Syllable Notes: Single syllable term. Annotated with: "No".
Synonyms: (v.) Ponder, meditate, worry, agonize.
Illustrative Context: The mother bird fed her brood. / The pioneers did not brood over the hardships they suffered on the long journey.
constituent
(kǝn stich' ü ǝnt):Definition: (noun) An essential part; a voter who elects a representative.
Stress & Syllable Notes: Primary stress on the second syllable (
stich'). Annotated with: "After (T)" and handwritten synonym "ingredient".Synonyms: Element, component, ingredient.
Illustrative Context: In our district, almost every constituent is dedicated to participating in the voting process.
downright
(daún' rīt):Definitions: (adverb) Thoroughly; (adjective) absolute, complete; frank, blunt.
Stress & Syllable Notes: Primary stress on the first syllable (
daún'). Annotated with: "After (N)" and handwritten synonym "utter".Synonyms: (adj.) Total, out-and-out, utter.
Illustrative Context: Our neighbor, who chopped down our tree and destroyed our fence, is just downright mean. / The actor felt like a downright fool when he forgot his lines.
drone
(drōn):Definitions: (noun) A loafer, idler; a buzzing or humming sound; a remote-control device; a male bee; (verb) to make a buzzing sound; to speak in a dull tone of voice.
Stress & Syllable Notes: Single syllable term. Annotated with: "Nothing", handwritten synonym "murmur", and antonym "workaholic".
Synonyms: (n.) Bum, do-nothing; (v.) hum, buzz, purr, murmur.
Antonyms: (n.) Hard worker, workaholic.
Illustrative Context: The steady drone of the engine put us all to sleep. / The speaker droned on and on, ignoring the fact that much of the audience had left.
goad
(gōd):Definitions: (verb) To drive or urge on; (noun) something used to drive or urge on.
Stress & Syllable Notes: Single syllable term. Annotated with: "thats my Life", "Nothing", and handwritten synonym "incite".
Synonyms: (v.) Prod, spur on, incite.
Antonyms: (v.) Curb, check, restrain.
Illustrative Context: The sergeant had to goad the reluctant soldiers into action. / The cowhand used a goad to prod the sluggish cattle.
hanker
(haŋ' kǝr):Definition: (verb) To long (for), to desire.
Stress & Syllable Notes: Primary stress on the first syllable (
haŋ'). Annotated with: "after (N)" and handwritten synonym "crave".Synonyms: Yearn, crave.
Illustrative Context: Now after three weeks on the road, I really hanker for home-cooked meals and my own bed.
indulge
(in dǝlj'):Definition: (verb) To give in to a wish or desire, give oneself up to.
Stress & Syllable Notes: Primary stress on the second syllable (
dǝlj'). Annotated with: "After (g)".Synonyms: Oblige, humor, coddle, pamper.
Antonyms: Deny, refuse.
Illustrative Context: Sometimes the members of a losing team will indulge in self-pity.
loom
(lüm):Definitions: (verb) To come into view; to appear in exaggerated form; (noun) a machine for weaving.
Stress & Syllable Notes: Single syllable term. Annotated with: "Nothing", handwritten synonym "appear", and handwritten antonym "receding".
Synonyms: (v.) Emerge, surface, hover, tower, appear.
Antonyms: (v.) Receding.
Illustrative Context: The climbers were awestruck to see the peak loom up before them. / The antique loom, once used to make cloth, was on display in the crafts museum.
oration
(ô rā' shǝn):Definition: (noun) A public speech for a formal occasion.
Stress & Syllable Notes: Primary stress on the second syllable (
rā'). Annotated with: "Sullen S.", handwritten synonym "sermon", and antonym "a few words".Synonyms: Address, sermon.
Antonyms: A few words.
Illustrative Context: Cicero's oration in the Roman Senate is still studied by speakers today.
peevish
(pē' vish):Definition: (adjective) Cross, complaining, irritable; contrary.
Stress & Syllable Notes: Primary stress on the first syllable (
pē'). Annotated with: "after (e)".Synonyms: Crabby, testy, stubborn.
Antonyms: Agreeable, amiable, even-tempered, pleasant.
Illustrative Context: Although the members of the tour group were usually in good humor, hunger made them peevish.
seethe
(sēth):Definition: (verb) To boil or foam; to be excited or disturbed.
Stress & Syllable Notes: Single syllable term.
Synonyms: Churn, simmer, stew.
Illustrative Context: Mother would seethe with rage each time she learned that a dog had been mistreated.
singe
(sinj):Definitions: (verb) To burn slightly; (noun) a burn at the ends or edges.
Stress & Syllable Notes: Single syllable term.
Synonyms: (v.) Scorch, char.
Antonyms: (v.) Incinerate.
Illustrative Context: Getting too close to the flame of the campfire caused the camper to singe his eyelashes. / A singe from a cigar ash had destroyed the last word in the document.
unique
(yü nēk'):Definition: (adjective) One of a kind; unequaled; unusual; found only in a given class, place, or situation.
Stress & Syllable Notes: Primary stress on the second syllable (
nēk'). Annotated with handwritten synonym: "singular".Synonyms: Unparalleled, distinctive, singular.
Antonyms: Ordinary, commonplace, run-of-the-mill.
Illustrative Context: Most people would agree that finding an elephant in one's bathtub would constitute a unique situation even in one's dreams.
upright
(ǝp' rīt):Definitions: (adjective) Vertical, straight; good, honest; (adverb) in a vertical position.
Stress & Syllable Notes: Primary stress on the first syllable (
ǝp').Synonyms: (adj.) Perpendicular, virtuous.
Antonyms: (adj.) Horizontal, prone, dishonest, corrupt.
Illustrative Context: The senator showed her upright character by voting for bills she believed to be morally right. / The patient was finally standing upright.
verify
(ver' ǝ fī):Definition: (verb) To establish the truth or accuracy of, confirm.
Stress & Syllable Notes: Primary stress on the first syllable (
ver').Synonyms: Prove, validate, substantiate.
Antonyms: Disprove, discredit.
Illustrative Context: The reporter hurried to verify the source of the controversial statement.