word roots

A

on
---
Afire, Ashore, Aboard, Afoot

A/an

not, without
---
Amoral, Anarchy, Anonymous, Apathy, Atheist

Ab/a

from, away, off
---
Absent, Abduct, Abnormal, Aberration, Abhor

Ac

bitter, sharp
---
Acute, Acerbic, Acrid, Acrimonious, Exacerbate

Ac, ad

to, toward, near
---
Adapt, Adhere, Accent, Accede, Aggregate, Assist

Acro

top, height, tip
---
Acrobat, Acrophobia, Acropolis, Acronym

Aer/aero

air
---
Aerospace, Aerodynamic, Aeronaut, Aerate

Alg, algo

pain
---
Nostalgia, Analgesic, Neuralgia

Ambi, amphi

both, on both sides, around
---
Ambivalent, Ambidextrous, Ambiguous, Amphibian

Ambul

walk, move
---
Amble, Ambulatory, Somnambulist, Preamble

Ami, amo

love
---
Amiable, Amity, Amorous, Enamored

Andr

man, male
---
Android, Androgynous, Polyandry

Anim

life, spirit
---
Animate, Animacity, Magnanimous, Unanimous, Animosity

Ann, enn

year
---
Annual, Centennial, Perennial, Anniversary

Ante

before, in front
---
Antecedent, Antedate, Anterior, Antebellum

Antho

flower
---
Anthology, Anthocyanin, Anthophilous

Anthrop

human
---
Anthropology, Philanthropy, Misanthrope, Anthropomorphic

Anti

against, opposite of
---
Antidote, Antipathy, Antithesis, Antagonist, Antibiotic

Apt

skill
---
Aptitude, Adapt, Inept, Adept

Aqua

water
---
Aquarium, Aquatic, Aqueduct, Aquifer

Arbor

tree
---
Arboretum, Arborist, Arboraceous

Arch

chief, most important, rule
---
Monarchy, Anarchy, Oligarchy, Matriarch, Patriarch

Archa, arhae, archi

primitive, ancient
---
Archaeology, Archaic, Archetype, Archive

Arthr, arthro

joint
---
Arthritis, Arthropod, Arthroscopic

Astro, aster

star, stars, outer space
---
Astronaut, Astronomy, Asterisk, Disaster, Asteroid

Auto

self, same, one
---
Autocrat, Autonomous, Autobiography, Automobile

Avia

bird
---
Aviary, Aviation, Aviator

Baro

pressure, weight
---
Barometer, Barometric, Barosphere

Bell, belli

war
---
Belligerent, Bellicose, Rebel, Antebellum

Bene

good, well
---
Benefactor, Benevolent, Beneficial, Benediction

Bi

two, twice, once in every two
---
Bicycle, Biannual, Bifocal, Bilateral, Binary

Bibli

book
---
Bibliography, Bibliophile, Bible

Bio

life, living matter
---
Biology, Biography, Biosphere, Symbiosis

Brev

short
---
Brevity, Abbreviate, Brief

Cap

take, seize
---
Captivate, Capture, Capacity, Captious, Recapitulate

Cardio

heart
---
Cardiology, Cardiac, Cardiovascular

Carn

flesh, meat
---
Carnivore, Carnal, Carnation, Reincarnation

Cata

down, against completely, intensive
---
Catastrophe, Catalyst, Cataclysm, Catalog

Caust, caut

to burn
---
Caustic, Cauterize, Holocaust

Cede, ceed, cess

go, yield
---
Concede, Recede, Proceed, Cessation, Predecessor

Cephal

head
---
Hydrocephalus, Cephalic, Cephalopod

Cerebr

brain
---
Cerebrum, Cerebral, Cerebrate

Cert

sure
---
Certain, Certify, Ascertain, Certitude

Chrom, chromat

color, pigment
---
Monochrome, Chromatic, Chromosome

Chron, chrono

time
---
Chronological, Chronic, Anachronism, Chronicle

Cide, cise

cut, kill
---
Homicide, Incision, Concise, Scissors, Infanticide

Circum

around, about
---
Circumference, Circumspect, Circumvent, Circumlocution

Clar

clear
---
Clarify, Clarity, Declaration

Co

with, together, joint
---
Coauthor, Coeducation, Coexist, Coherent

Cog

to know
---
Cognizant, Recognize, Cognitive, Incognito

Col

together, jointly
---
Collaborate, Colleague, Collusion, Colloquial

Com

together, common
---
Commemorate, Composition, Community, Compatriot

Contra, contro

against, opposite
---
Contradict, Controversy, Contraband, Contravene

Corp, corpo

body
---
Corporation, Corpse, Corpulent, Corpuscle

Cosmo

universe
---
Cosmos, Cosmopolitan, Cosmonaut, Microcosm

Cred

believe
---
Credit, Incredible, Credulous, Credibility, Credentials

Crypto

hidden, secret
---
Cryptic, Cryptography, Encrypt

Culp

guilt
---
Culprit, Culpable, Exculpate, Inculpate

Cumul

mass, heap
---
Accumulate, Cumulative, Cumulus

Cycl

circle, ring
---
Bicycle, Cyclone, Cycle, Encyclical

De

reduce, away, down, remove
---
Devalue, Dethrone, Deject, Denounce, Decelerate

Dei

god
---
Deity, Deify, Deism

Dem, demo

people
---
Democracy, Demographics, Epidemic, Demagogue

Derm

skin
---
Dermatology, Epidermis, Taxidermy, Hypodermic

Di

two, twice
---
Dichotomy, Dilemma, Dioxide, Digraph

Di, dis

apart, away
---
Digress, Disappear, Divert, Dissect, Disparate

Dict

speak
---
Dictate, Predict, Contradict, Verdict, Malediction

Dol

suffer, pain
---
Doleful, Dolorous, Condolence, Indolent

Domin

master
---
Dominate, Domineer, Predominant, Dominion

Don

give
---
Donate, Donor, Pardon, Condone

Dox

belief, opinion
---
Orthodox, Paradox, Dogma, Heterodox

Dur

harden, to last, lasting
---
Durable, Duration, Endure, Obdurate, Duress

Dyn

power, energy, strength
---
Dynamic, Dynamite, Dynasty, Dynamo

Dys

abnormal, bad
---
Dysfunctional, Dyslexia, Dystopia, Dyspepsia

Ego

self
---
Egotist, Egocentric, Egoism, Alter-ego

Endo

within, inside
---
Endocrine, Endoskeleton, Endothermic

Erg, ergo

work
---
Ergonomic, Energy, Ergometer, Synergy

Hetero

different, other
---
Heterogeneous, Heterodox, Heterosexual

Hex

six
---
Hexagon, Hexagram, Hexameter

Homo

alike, same
---
Homogeneous, Homonym, Homophone, Homogenize

Hydr, hydro

liquid, water
---
Dehydrate, Hydroelectric, Hydrant, Hydrogen

Hygr, hygro

moisture, humidity
---
Hygrometer, Hygroscopic, Hygrophilous

Hyper

too much, over
---
Hyperactive, Hyperbole, Hypertension, Hypercritical

Hypo

under
---
Hypodermic, Hypothesis, Hypothermia, Hypothetical

Idio

peculiar, personal, distinct
---
Idiosyncrasy, Idiot, Idiom, Idioblast

Infra

beneath, below
---
Infrastructure, Infrared, Infrasonic

Inter

between, among, jointly
---
International, Intercept, Intervene, Intermittent

Intra, intro

within, inside
---
Intramural, Intravenous, Introduce, Introvert

Iso

equal
---
Isosceles, Isothermal, Isotope, Isometric

Ject

throw
---
Eject, Reject, Conjecture, Interject, Trajectory

Jud

law
---
Judgment, Judicial, Prejudice, Judicious

Juven

young
---
Juvenile, Rejuvenate, Juvenilia

Lact

milk
---
Lactose, Lactation, Lactic

Leuk, leuc

white, colorless
---
Leukemia, Leukocyte, Leucite

Lex

word, law, reading
---
Lexicon, Lexicography, Dyslexia

Liber

free
---
Liberty, Liberate, Liberal, Libertine

Lingu

language, tongue
---
Linguistics, Bilingual, Multilingual, Lingua-franca

Lip, lipo

throw
---
Liposuction, Lipoid, Lipoma

Log

word
---
Dialogue, Apology, Monologue, Epilogue, Eulogy

Mega

great, large, million
---
Megaphone, Megalomania, Megabyte, Megalopolis