khan academy 500

Abate

To lessen or reduce.

Abhor

To detest or hate strongly.

Abstruse

Difficult to understand.

Accolade

An award or praise.

Acquiesce

To accept reluctantly.

Acrimony

Bitterness or ill feeling.

Adept

Very skilled or proficient.

Adroit

Clever or skillful.

Adulation

Excessive praise or admiration.

Aesthetic

Concerned with beauty.

Affable

Friendly and easy to talk to.

Alacrity

Brisk and cheerful readiness.

Altruism

Unselfish concern for others.

Ambivalent

Having mixed feelings.

Ameliorate

To improve or make better.

Amicable

Friendly and without discord.

Ample

Enough or more than enough.

Anachronism

Something out of place in time.

Anathema

A cursed or detested person.

Anecdote

A short, amusing story.

Anguish

Severe mental or physical pain.

Anomaly

Something that deviates from normal.

Antagonist

Opponent or adversary.

Antithesis

Direct opposite.

Apathy

Lack of interest or emotion.

Aplomb

Self-confidence or assurance.

Apprehensive

Anxious or fearful.

Arbitrary

Based on random choice.

Arcane

Understood by few.

Arduous

Involving much effort.

Articulate

Express clearly and effectively.

Ascendancy

Dominant position.

Ascertain

Find out for certain.

Aspire

Aim or hope for.

Assiduous

Showing great care.

Assuage

To make less intense.

Astute

Clever and perceptive.

Atrophy

Waste away from lack of use.

Attenuate

Reduce in force or degree.

Audacious

Bold or daring.

Austere

Severe or strict in manner.

Avarice

Extreme greed for wealth.

Avid

Eager and enthusiastic.

Banal

Lacking in originality.

Benevolent

Well-meaning and kindly.

Benign

Gentle and harmless.

Bequeath

Leave something by will.

Berate

Scold or criticize angrily.

Blatant

Completely obvious.

Brevity

Concise and exact use of words.

Brusque

Abrupt or offhand in manner.

Bucolic

Relating to the countryside.

Burgeon

Begin to grow rapidly.

Buttress

Support or reinforce.

Cacophony

Harsh, discordant mixture of sounds.

Cajole

Persuade with flattery.

Camaraderie

Mutual trust and friendship.

Candor

Open honesty.

Capricious

Unpredictable or impulsive.

Castigate

Reprimand severely.

Censure

Express severe disapproval.

Chagrin

Distress caused by humiliation.

Chicanery

Deception by trickery.

Circumspect

Wary and unwilling to take risks.

Clandestine

Kept secret or done secretively.

Clemency

Mercy or leniency.

Coalesce

Come together to form one.

Cogent

Clear, logical, and convincing.

Commensurate

Corresponding in size or degree.

Compelling

Evoking interest or attention.

Complacent

Self-satisfied and unaware of dangers.

Conciliatory

Intended to pacify.

Concur

Agree or approve.

Condone

Accept and allow behavior.

Conflagration

A large, destructive fire.

Confound

Cause surprise or confusion.

Congenial

Pleasant because of personality.

Conjecture

An opinion based on incomplete information.

Connoisseur

An expert judge in taste.

Conspicuous

Clearly visible or noticeable.

Constitutional

Relating to the body or health.

Contemptuous

Showing disdain or scorn.

Contentious

Causing or likely to cause argument.

Contrite

Feeling or expressing remorse.

Conundrum

A confusing and difficult problem.

Convivial

Friendly, lively, and enjoyable.

Copious

Abundant in supply.

Corroborate

Confirm or give support.

Coup

A sudden, violent, and illegal seizure of power.

Covet

Yearn to possess something.

Cower

Crouch down in fear.

Credible

Able to be believed.

Credulous

Having or showing too much readiness to believe things.

Criterion

A standard by which something may be judged.

Culpable

Deserving blame.

Cursory

Hasty and therefore not thorough.

Readiness

A willingness to accept or believe something.

Curtail

Reduce in extent or quantity.

Cynical

Distrustful of human sincerity.

Dearth

A scarcity or lack.