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adjective plac·id \ˈpla-səd\

Simple Definition of placid

  • : not easily upset or excited

  • : not moving much : calm and steady

Source: Merriam-Webster's Learner's Dictionary

Full Definition of placid

  1. :  serenely free of interruption or disturbance <placid skies> <a placid disposition>; also :  complacent 1

placidity play \pla-ˈsi-də-tē, plə-\ noun
placidly play \ˈpla-səd-lē\ adverb
placidness noun

Examples of placid in a sentence

  1. a person with a sunny, placid disposition

  2. the placid surface of the lake

Did You Know?

Like placid, the words calm, tranquil, and serene all mean "quiet and free from disturbance." Calm conveys a quiet composure that contrasts with surrounding chaos, while tranquil suggests a very deep quietude and peace. Serene is loftier still, carrying a sense of utter peace and happiness. Though placid traces back to Latin placēre, meaning "to please," it isn't always as positive a term as its synonyms. It can imply a lack of agitation rather than a true peace, and it sometimes suggests excessive self-satisfaction or even stupidity.

Origin of placid

Latin placidus, from placēre to please — more at please

First Known Use: 1626

Synonym Discussion of placid

calm, tranquil, serene, placid, peaceful mean quiet and free from disturbance. calm often implies a contrast with a foregoing or nearby state of agitation or violence <the protests ended, and the streets were calm again>. tranquil suggests a very deep quietude or composure <the tranquil beauty of a formal garden>. serene stresses an unclouded and lofty tranquillity <watched the sunset of a serene summer's evening>. placid suggests an undisturbed appearance and often implies a degree of complacency <remained placid despite the criticism>. peaceful implies a state of repose in contrast with or following strife or turmoil <grown peaceful in old age>.

Rhymes with placid

PLACID Defined for Kids


adjective plac·id \ˈpla-səd\

Definition of placid for Students

  1. :  calm and peaceful <a placid face> <a placid lake>

Seen and Heard

What made you want to look up placid? Please tell us where you read or heard it (including the quote, if possible).


a division or portion of a pool or whole

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