Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

Index of letter A

a-1Not or without.
a-2Towards, of, in, into or at; marking some ongoing process or state; movement onwards or away.
-a1Forming singular words of various types.
-a2The plural of certain nouns of Latin or Greek origin.
-a3Informal terms in spoken English.
ab-Off, away, or from.
abdomin(o)-The abdomen.
-ableAble to be.
abs-See ab-
-acForming adjectives and nouns.
ac-See ad-
-acalSee -ac
acanth(o)-Spiny or thorny.
acar(o)-A mite or tick.
-aceaGroups of animals.
-aceaeFamilies of seed-bearing plants.
-aceanSee -acea
-aceousForming adjectives.
acet(o)-Acetic acid or the acetyl group.
acid(o)-Acid; sharp or sour.
-aciousInclined to, given to, or having as a capacity.
acoust(o)-Sound or hearing.
acr(o)-A tip, height, or extremity.
actin(o)-A ray or beam.
-acusisA condition of the hearing.
-acySee -cy
ad-Motion or direction to; reduction or change into; addition, increase, or intensification.
-ad1Collective numerals; nymphs.
-ad2Indicating a direction towards some part of the body.
-adeDenoting an action, its result, or something associated with it.
aden(o)-A gland.
adip(o)-Fat or fatty tissues.
-adoForming a variety of words based on Portuguese, Spanish, or Italian originals.
adren(o)-The adrenal glands.
-aeForming plurals.
-aemiaA substance present in the blood, especially in excess.
aer(o)-Air or another gas; the atmosphere; aircraft.
af-See ad-
afore-Before or previously.
Afro-Africa; African and …
ag-See ad-
-ageForming nouns.
-agogueLeading or promoting.
-agraPain in some part of the body.
agro-Farming; cultivation.
-aholicA person excessively fond of something.
-aireA person characterized by or linked to the idea in the stem.
-akusisSee -acusis
al-See ad-
-al1Forming adjectives and some nouns.
-al2An aldehyde.
alb-White or bright.
aldo-An aldehyde.
-alesOrders of plants.
-algiaPain, usually in a specified part of the body.
-aliaA collection or group.
-alitySee -ity
all(o)-Other; different.
-amaSee -orama
ambi-On both sides; around.
amid(o)-The CONH2- group in chemical compounds.
amino-The amine group, NH2—.
amnio-The amnion.
amph(i)-Variously two, both, on both sides, or around.
-anSee -ian
an-See a-1, ad-, and ana-
-anaThings associated with a person, place, or field of interest.
an(a)-Variously up, back, or again.
-anceA state or quality; a process or action.
anchylo-See ankylo-
-andA person or thing to be treated in a specified way.
andr(o)-Male or maleness.
-ane1Saturated straight-chain (aliphatic) hydrocarbons.
-ane2Forming adjectives.
anem(o)-The wind.
-aneousSee -ous
angi(o)-Blood or seed vessels.
-angiumA container.
Anglo-English or British; English or British and …
anis(o)-Unequal, asymmetrical, dissimilar.
ankylo-Bent or crooked; stiff or fixed.
-antForming adjectives and nouns.
ante-Before or preceding.
antero-Nearer the front of the body; forward in time.
anth(o)-A flower or flowers.
anthrac(o)-Coal or carbon; a carbuncle.
anthrop(o)-Human, or of a human being.
-anthropyHuman, or humankind.
ant(i)-Acting against, resisting, or opposing something; the opposite or reverse of something.
ap-See ad-
apic(o)-A point or apex.
apo-Away from; separate from.
après-A period following some activity.
ar-See ad-
-ar1Forming adjectives.
-ar2Forming nouns.
arachn(o)-A spider or spiders.
-aramaSee -orama
arbor(i)-A tree or trees.
-archSee -archy
arch-Chief; principal; pre-eminent of its kind.
archaeo-Ancient or prehistoric times.
arche-See arch-
-archyGovernment; rule of a particular type; a chief or ruler.
-ardForming nouns.
areo-The planet Mars.
-arianForming adjectives and corresponding nouns.
-ariousConnected with; pertaining to.
-ariumA place or container connected with, or employed for, some purpose.
-arooSee -eroo
-artSee -ard
arteri(o)-An artery.
arthr(o)-A joint.
-ary1Forming nouns.
-ary2Forming adjectives.
as-See ad-
asc(o)-A bag or sac.
-aseAn enzyme.
-asisA disease or other medical condition.
-astA person connected with a pursuit or activity.
-asterInferior; a poor imitation.
astr(o)-A star or other celestial body; outer space; star-shaped.
at-See ad-
-ataSee -a2
-atableSee -ate3
-ate1Forming nouns.
-ate2Forming adjectives.
-ate3Forming verbs.
-ateriaSee -teria
ather(o)-An atheroma.
-athonAn event long in duration, usually for fund-raising purposes.
-atiGroups of people.
-aticForming adjectives, and some nouns.
-atilePossibility, potential, or ability.
-ationAn action, or an instance of an action.
-ativeCharacteristic or predisposed.
-atorSee -or1
-atorySee -ory1 and -ory2
atto-In units of measurement, a factor of 10-18.
audi(o)-Hearing or sound.
Austro-1Austria; Austria and …
Austr(o)-2Australia; Australia and …; southern.
aut(o)-1Self; oneself; by itself.
auto-2An automobile or motor vehicle.
aux(o)-Growth or increase.
avi-A bird or birds; flight.
axo-An axis.
az(o)-Nitrogen; the chemical radical -N=N-.
-azoleSee -ole1

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