pleasantly calm or peaceful; unruffled; tranquil; serenely quiet or undisturbed: placid waters.

Origin of placid

1620–30; < Latin placidus calm, quiet, akin to placēre to please (orig., to calm); see -id4
Related formspla·cid·i·ty [pluh-sid-i-tee] /pləˈsɪd ɪ ti/, plac·id·ness, nounplac·id·ly, adverbun·plac·id, adjectiveun·plac·id·ly, adverbun·plac·id·ness, noun

Synonyms for placid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for placidity

Historical Examples of placidity

  • His usually placid, gentle face had lost some of its placidity.


    Joseph C. Lincoln

  • It's difficult to give you an adequate idea of Davidson's placidity.


    Joseph Conrad

  • That placidity of hers gave her the air of being as relentless as a Fate.

    Mary Gray

    Katharine Tynan

  • "In a position which I no longer occupy," he amended, recovering his placidity.

    Tristram of Blent

    Anthony Hope

  • Her face was flushed; indignation disturbed the placidity of her eyes.

    Trail's End

    George W. Ogden

British Dictionary definitions for placidity



having a calm appearance or nature
Derived Formsplacidity (pləˈsɪdɪtɪ) or placidness, nounplacidly, adverb

Word Origin for placid

C17: from Latin placidus peaceful; related to placēre to please
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for placidity

1610s, from Latin placiditatem (nominative placiditas), from placidus (see placid).



1620s, from French placide (15c.) and directly from Latin placidus "pleasing, peaceful, quiet, gentle, still, calm," from placere "to please" (see please). Related: Placidly; placidness.

Online Etymology Dictionary, © 2010 Douglas Harper