ab ovo from the beginning
abattoir a slaughterhouse
abecedarian a beginner; pertaining to the alphabet; rudimentary
abed in bed
aberrant abnormal
abeyance suspension; temporary cessation
abjure to renounce, reject, or shun
ablution the washing of the body or some part of it
abnegate refuse or deny oneself; to give up (rights, claims, etc.)
abominate to detest intensely
aborning (while) being produced or born
abrogate friendly warning; to do away with
abscond to depart secretly
abstemious abstinent; refraining from indulgence; temperate
abstruse difficult to comprehend
abulia loss or impairment of the ability to act or to make decisions
accede to agree or assent; to become a party
acclimate to accustom or become accustomed to a new climate, environment, or situation
acerbic sharp, biting, or acid in temper, expression, or tone
acme the highest point of something
acquiesce to accept or consent passively or without objection
acrid bitter; sharp and harsh
acrimony bitter, harsh, or biting sharpness
acuity acuteness of perception or vision
acumen quickness or keenness of perception or discernment