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
North American informal nonplussed
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