Synonyms of placid in English:

placid


See definition of placid

adjective

1‘she's normally very placid’

SYNONYMS

even-tempered, calm, equable, tranquil, imperturbable, unexcitable, peaceable, peaceful, serene, mild, gentle, quiet, cool, cool-headed, collected, cool, calm, and collected, composed, self-possessed, poised, easy-going, temperate, level-headed, steady, unruffled, unmoved, undisturbed, unperturbed, unemotional, phlegmatic, stolid, bovine

informal unflappable

rare equanimous

ANTONYMS

excitable, temperamental

2‘the placid waters of a small lake’

SYNONYMS

quiet, calm, tranquil, still, peaceful, motionless, smooth, waveless, pacific, unruffled, undisturbed, like a millpond

restful, sleepy

ANTONYMS

stormy, rough