| A | B |
| ase | lower; humiliate |
| abash | embarrass |
| abbreviate | shorten |
| abdicate | renounce; give up |
| abduction | kidnapping |
| aberrant | abnormal or deviant |
| abet | aid, usually in doing something wrong |
| abeyance | suspended action |
| abhor | hate |
| abject | wretched; lacking pride |
| abjure | renounce upon oath |
| ablution | washing |
| abnegation | repudiation; self sacrefice |
| abolish | cancel; put an end to |
| abominable | destestable |
| aboriginal | being the first of its kind in a region |
| abortive | unsuccessful |
| abrade | wear away by friction |
| abrasive | rubbing away |
| abrogate | abolish |
| abscond | depart secretly and hide |
| absolute | complete |
| absolve | pardon |
| absorb | assimilate or incorporate |
| abstain | refrain |
| abstinence | retraint from eating or drinking |
| abundant | plentiful |
| abusive | coarsely insulting; physically harmful |
| abut | border upon; adjoin |
| abysmal | bottomless |
| abyss | enormous chasm; vast bottomless pit |
| academic | related to a school; not practical or directly useful |
| accede | agree |
| accelerate | move faster |
| accentuate | emphasize; stress |
| accessory | additional object |
| acclimate | adjust to climate |
| acclivity | sharp upslope of a hill |
| accommodate | oblige or help someone |
| accomplice | partner in crime |
| accord | agreement |
| accost | approach and speak first to a person |
| accoutre | equip |
| acerbity | bitterness of speech and temper |
| acetic | vinegary |
| acidulous | slightly sour; sharp, caustic |
| acme | top; pinnacle |
| acoustics | science of sound; quality that makes a room easy or hard to hear in |
| acquire | obtain; get |
| acquittal | deliverance from a charge |
| acrophobia | fear of heights |
| actuarial | calculating ;pertaining to insurance statistics |
| actuate | motivate |
| acuity | sharpness |
| acumen | mental keenness |
| acutequickly perceptive; keen | quickly perceptive; keen |
| adage | wise saying |
| adamant | hard; inflexible |
| adapt | alter; modify |
| addendum | an addition or supplement |
| addiction | compulsive; habitual need |
| addle | muddle; drive crazy; become rotten |
| address | direct a speech to |
| adept | expert at |
| adhere | stick fast |
| adherent | supporter |
| adjacent | adjoining; neighboring |
| adjunct | something added on or attached that is generally inferior |
| admonish | warn; reprove |
| admonition | warning |
| adorn | decorate |
| adroit | skillful |