examples #1 (from ab to bene)

aberrant

deviating from the norm

abeyant

temporarily inactive or suspended

abhorrent

causing or deserving strong dislike or hatred

abstemious

marked by restraint, especially in eating or drinking

acrimonious

angry and bitter in tone, language, or manner

acerbate

to irritate or embitter; to make more severe

acumen

the ability to make quick, accurate judgments; sharpness of mind

acuity

sharpness or keenness, especially of vision, hearing, or thought

ambit

a sphere of action, expression, or influence; the bounds or limits

ambient

existing in the surrounding area

amble

to walk at a slow, relaxed pace

superannuated

outdated, obsolete, or retired due to age

perennial

lasting for many years; enduring

annals

a record of events arranged in yearly sequence

antedate

to come before in time; to assign an earlier date

antediluvian

made, evolved, or developed a long time ago; extremely primitive or outmoded

antecedent

a preceding event; predecessor; ancestor

antithetical

directly opposite or opposed

anticlimactic

disappointing or less exciting than expected

antinomy

a contradiction between two principles or conclusions, both of which seem reasonable

arboreal

relating to trees; living in trees

autodidact

a self-taught person

belligerent

hostile and aggressive

benign

kind and gentle

benevolent

marked by or disposed to doing good