| A | B |
| antipathy (n) | hatred |
| antithetical (adj) | opposite |
| antidisestablishmentarianism (n) | belief against those against the system |
| ambiguous (adj) | vague |
| ambidextrous (adj) | using both hands equally well |
| ambivalent (adj) | having two conflicting feelings |
| circumspect (adj) | careful, cautious |
| circumscribe (v) | to limit; draw a circle around |
| circumlocution (n) | the use of too many words to express an idea |
| apocalypse (n) | forecast of doom |
| apogee (n) | highest point |
| apoplectic (adj) | lack of feeling, lack of control |