| A | B |
| accomplice | partner in crime |
| acknowledge | recognize; admit |
| acquittal | declaration of innocence; deliverance from a charge |
| acrimony | bitterness of words or manner |
| acumen | mental keenness |
| adamant | hard; inflexible |
| adapt | alter; modify |
| addiction | compulsive, habitual need |
| adhere | stick fast to |
| adjacent | adjoining; neighboring; close by |
| admonish | warn; schold |
| adroit | skillfull; nimble |
| adulation | flattery; admiration |
| adulterate | make impure by adding inferior or tainted substances |
| adversary | opponent |
| adverse | unfavorable; hostile |
| adversity | poverty; misfortune |
| advocate | urge; plead for |
| aesthetic | artistic; dealing with or capable of appreciation of the beautiful |
| affable | easily approachable; warmly friendly |
| affected | artificial; pretended; assumed in order to impress |
| affinity | kinship; attraction to |
| affirmation | positive assertion; confirmation; solemn pledge by one who refuses to take an oath |
| affix | add on; fasten; attach |
| affluence | wealth; prosperity; abundance |
| affront | insult; offend |
| aggregate | gather; accumulate |
| agility | nimbleness |
| agitate | stir up; disturb |
| alacrity | cheerful promptness |
| alias | an assumed name |
| alienate | make hostile; separate |
| alleviate | relieve; lessen |