| Term | Definition |
| amenities | n. convenient features; courtesies |
| amiable | adj. agreeable; loveable; warmly friendly |
| amicable | adj. politely friendly; not quarrelsome |
| amiss | adj. wrong; faulty |
| amity | n. friendship |
| amnesia | n. loss of memory |
| amnesty | n. pardon |
| amoral | adj. nonmoral |
| amorous | adj. moved by sexual love; loving |
| amorphous | adj. formless; lacking shape or definition |
| amphibian | adj. able to live both on land and in water |
| amphitheater | n. oval building with tiers of seats |
| ample | adj. abundant |
| amplify | v. broaden or clarify by expanding; intensify; make stronger |
| amputate | v. cut off part of body; prune |
| amulet | n. charm; talisman |
| anachronistic | adj. having an error involving time in a story |
| analgesic | adj. causing insensitivity to pain |
| analogous | adj. comparable |
| analogy | n. similarity; parallelism |
| anarchist | n. person who seeks to overturn the established government |
| anarchy | n. absence of governing body; state of disorder |
| anathema | n. solemn curse |
| ancestry | n. family descent |
| anchor | v. secure or fasten firmly |
| ancillary | adj. serving as an aid or accessory; auxiliary |
| anecdote | n. short account of an amusing or interesting event |
| anemia | n. condition in which blood lacks red corpuscles |
| anesthetic | n. substance that removes sensation with or without loss of consciousness |
| anguish | n. acute pain; extreme suffering |
| angular | adj. sharp-cornered; stiff in manner |
| animated | adj. lively; spirited |
| animosity | n. active enmity |
| animus | n. hostile feeling or intent |
| annals | n. records; history |
| annex | v. attach; take possession of |
| annihilate | v. destroy |
| annotate | v. comment; make explanatory notes |
| annuity | n. yearly allowance |
| annul | v. make void |
| anoint | v. consecrate |
| anomalous | adj. abnormal; irregular |
| anomaly | n. irregularity |
| anonymity | n. state of being nameless |
| anonymous | adj. having no name |
| antagonism | n. hostility; active resistance |
| antecede | v. precede |
| antecedents | n. preceding events or circumstances that influence what comes later |
| antediluvian | adj. antiquated; extremely ancient |
| anthem | n. song of praise or patriotism |
| anthology | n. book of literary selections by various authors |
| anthropocentric | adj. regarding human beings as the center of the universe |
| anthropoid | adj. manlike |
| anthropologist | n. a student of the history and science of mankind |
| anthropomorphic | adj. having human form or characteristics |
| anticlimax | n. letdown in thought or emotion |
| antidote | n. medicine to counteract a poison or disease |
| antipathy | n. aversion; dislike |
| antiquated | adj. old-fashioned; obsolete |
| apathy | n. lack of caring; indifference |
| ape | v. imitate or mimic |
| aperture | n. opening; hole |
| apex | n. tip; summit; climax |
| aphasia | n. loss of speech due to injury or illness |
| aphorism | n. pithy maxim |
| apiary | n. a place where bees are kept |
| aplomb | n. poise; assurance |
| apocalyptic | adj. prophetic; pertaining to revelations |
| apocryphal | adj. untrue; made up |
| apogee | n. highest point |
| apolitical | adj. having an aversion or lack of concern for political affairs |
| apologist | n. one who writes in defense of a cause or institution |
| apostate | n. one who abandons his religious faith or political beliefs |