Dictionary of Root Words: Greek and Latin Roots (English Word Power)

What are "Root Words"?
A root, or root word is a wordwhich is used to form another word. It is also called a base word. Aroot does not have a prefix (A letter or group of letters added to thebeginning of a word) or a suffix (A letter or group of letters added tothe end of a word).
Root is the primary lexical unit of a word, and of a word family

For example, pure is a root. By adding prefixes and suffixes, the following words could be made:
impure, purity, pureness

Similarly, play and move are root words. By adding prefixes and suffixes, the following words could be made:
plays, played, playing, player
moving, movement, moved, movable, mover, movingly

In this book, I have given most common Greek and Latin roots which are used in English language

Sample This:

Root Words -- A

AB/ABS
Origin: Latin
Meaning: away, from, off
Examples:
abate -- to decline or subside | related word: abatement
abject -- hopeless
abjure -- to disown or renounce
abnormal -- unusual | related words: abnormally, abnormality
abroad -- out of the country
abscess -- swelling
abscond -- to run away | related word: absconder
abseil -- to go down a steep cliff
absence -- nonattendance | related words: absent, absentee, absenteeism
absolve -- to forgive
absorb -- to soak up | related words: absorbance, absorbed, absorbency, absorbent, absorbing, absorption
abstemious -- self-disciplined
abstinent -- not having something for moral reason | abstinence
abstract -- not real; theoretical | related words: abstracted, abstractedly

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AMB
Origin: Latin | Meaning: both; around/surrounding
Examples:
ambidexterity -- ability to use both the left and right hand equally well | related word: ambidextrous
ambiguous -- double meaning; uncertain | related words: ambiguity, ambiguously, unambiguous
ambivalent -- showing both good and bad feelings | related words: ambivalence, ambivalently
ambience -- the atmosphere of a place | related word: ambient

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ANIM
Origin: Latin | Meaning: breath; life; soul
Examples:
animal -- a living creature
animate -- having life; to make something full of liveliness | related words: animated, animatedly, animation, animato, animator, inanimate
animism -- the belief that natural objects have a living soul | related words: animist, animistic
animosity -- strong feeling of opposition
equanimity -- calm state of mind
pusillanimous -- lack of courage
unanimous -- agreeing with others | related word: unanimously

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AQUA/AQUE
Origin: Latin | Meaning: water
Examples:
aquaculture -- the act of growing of plants in water for food
aqualung -- a device for breathing for divers
aquamarine -- a pale greenish-blue stone or color
aquaplane -- an equipment used in a boat
aquarium -- a container to keep fish and water plants
aquarobics -- physical exercises that are done in water
aquatic -- growing near water or relating to water
aquifer -- a layer of soil or rock that absorbs and holds water

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AUD
Origin: Latin | Meaning: hearing
Examples:
audible -- capable of being heard | related words: audibly, audibility
audience -- crowd of listeners
audition -- a short performance given by an actor, a singer, etc, that makes people to judge his/her talent
auditorium -- a building for public meetings, etc.
auditory -- connected with hearing

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Other Root Words -- A
Root Word [Origin] -- Meaning
abr [Greek] -- delicate
aca [Greek] -- a point; silence
acar [Greek] -- tiny
ace [Greek] -- heal
acer [Latin] -- sharp
acerv [Latin] -- pile
achly [Greek] -- darkness; gloom
achth [Greek] -- burden
aci [Greek] -- a point; barb
acin [Latin] -- berry
acr [Latin] -- sharp
acrib [Greek] -- exact
aden [Greek] -- gland
adol [Greek] -- genuine
adr [Greek] -- thick
adran [Greek] -- weak
adras [Latin] -- scraped
aechm [Greek] -- spear
aeci [Greek] -- injury
aegi [Latin] -- shield
aegr [Latin] -- sick
aeno [Greek] -- terrible
aep [Greek] -- tall
aequa [Latin] -- equal
aga [Greek] -- very
agan [Greek] -- gentle
agel [Greek] -- herd
ager [Latin] -- afield
aist [Greek] -- unseen
alao [Greek] -- blind
alcim [Greek] -- strong
aleo [Greek] -- warm