placid

Synonyms

calm, collected, composed, cool, coolheaded, equal, level, limpid, peaceful, possessed, recollected, sedate, self-composed, self-possessed, serene, smooth, tranquil, undisturbed, unperturbed, unruffled, unshaken, untroubled, unworried;

Antonyms

agitated, discomposed, disturbed, flustered, perturbed, unglued, unhinged, unstrung, upset;

Near Antonyms

anxious, bothered, distressed, uneasy, unquiet, unsettled, worried;

jittery, jumpy, nervous, restless, skittish, tense;

high-strung, unstable, uptight;

Related Words

even, even-keeled, steady, well-adjusted, well-balanced;

imperturbable, nerveless, unflappable, unshakable;

centered, disciplined, equable, self-contained, self-controlled;

affable, breezy, devil-may-care, easygoing, happy-go-lucky, laid-back, loosey-goosey, mellow;

carefree, nonchalant, unconcerned;

assured, confident, self-assured;

aloof, detached, dispassionate, indifferent;

bovine, impassive, phlegmatic, sober, stolid;

relaxed, relieved, tranquilized (also tranquillized);

Phrases

at peace;