Circumference. Periphery, circuit, boundary, outline, enclosure.
Ant. Center, interior.
Circumlocution. Verbosity, prolixity, wordiness, diffuseness, periphrasis, redundance, tautology.
Ant. Brevity, compression, condensation, shortness, succinctness, terseness, compactness, conciseness, directness, plainness.
Circumscribe. Define, limit, delineate, enclose, confine, restrict.
Ant. Distend, dilate, expand, amplify, enlarge, extend.
Circumspect. Cautious, wary, heedful, attentive, careful, prudent, watchful, scrupulous, vigilant.
Ant. Careless, reckless, incautious, heedless, unwary.
Circumstance. Event, situation, occurrence, position, detail, incident, feature, accompaniment, particular, point, item, condition.
Ant. Deed, case, transaction, business, affair.