| Term | Definition |
| adverse | antagonistic, unfavorable, dangerous |
| advocate | 1.to argue in favor of something 2.a person who argues in favor of something |
| aerial | somehow related to the air |
| aesthetic | artistic, related to the appreciation of beauty |
| affable | friendly, amiable |
| affinity | a spontaneous feeling of closeness |
| affluent | rich, wealthy |
| affront | an insult |
| aggrandize | to increase or make greater |
| aggregate | 1.a hole or total 2.to gather into a mass |
| aggrieved | distressed, wronged, injured |
| agile | quick, nimble |
| agnostic | believing that the existence of God cannot be proven or disproven |
| agriculture | farming |
| aisle | a passageway between rows of seats |
| alacrity | eagerness, speed |
| alias | a false name or identity |
| allay | to soothe, ease |
| allege | to assert, usually without proof |
| alleviate | to relieve, make more bearable |