Abash
To embarrass
Abate
To reduce
Abdicate
To step down from a position of power or responsibility
Aberration
Something not typical
Abhor
To hate very
Abject
Hopeless
Abnegate
To deny oneself things
Abortive
Unsuccessful
Abridge
To shorten
Absolute
Total
Absolve
To forgive or free from blame
Abstinent
Abstaining
Abstract
Theoritical
Abstruse
Hard to understand
Abysmal
Extremely hopeless
Accolade
Award
Accost
To approach or speak to someone aggressively
Acerbic
Like acid
Acquiesce
To accept
Acrid
Bitter
Acrimonious
Bitter
Acumen
Mental sharpness
Acute
Sharp
Adamant
Stubborn