Red
aberration
unusual, abnormal
abrasive
rough, hard
abhor
hate, dislike
acclimate
adapt
accustomed
normal, usual, habit
accentuate
emphasize, highlight
acrimonious
angry, bitter, harsh
alienate
isolated, separated
allegiance
devotion, loyalty
aloof
distant, detached
adamant
inflexible, unwilling, stubborn
ambiguous
unclear, confusing
amiable
friendly, pleasant, nice
analyze
study, examine
aptitude
talent, ability
amnesty
forgiveness, pardon
archaic
old, outdated, ancient, antique
baffle
confuse, puzzle, perplex
authorized
permission, power
aspire
desire or want
affluent
wealthy, rich
alleviate
reduce, relieve
aristocratic
noble, grand, elite
assumed
accept, suppose
balk