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[plas-id] /ˈplæs ɪd/
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 forms
[pluh-sid-i-tee] /pləˈsɪd ɪ ti/ (Show IPA),
placidness, noun
placidly, adverb
unplacid, adjective
unplacidly, adverb
unplacidness, noun
See peaceful. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for placidity
Historical Examples
  • I began by remarking that she must find London a very complete change after the sun and placidity that she had come from.

  • Any reference to the "right one" always disturbed her placidity.

  • She felt a little shocked, but her placidity was too deep-rooted to be altogether destroyed.

    Melomaniacs James Huneker
  • In repose the face wore a placidity which was almost that of melancholy.

    The Sign of the Spider Bertram Mitford
  • His countenance, broad and chub-cheeked, had the placidity of a full moon.

    The Blood of the Arena Vicente Blasco Ibez
  • Her placidity was exceedingly annoying to this set of girls.

    Hester's Counterpart Jean K. Baird
  • "Just for exercise," she answered dreamily; and her placidity the more exasperated her journalist cousin.

    Gentle Julia Booth Tarkington
  • I asked, remaining stubbornly and persistently ox-like in my placidity.

    The Prairie Mother Arthur Stringer
  • The detective's placidity and his perpetual self-contradictions exasperated M. de Presles.

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

    Mary-'Gusta Joseph C. Lincoln
British Dictionary definitions for placidity


having a calm appearance or nature
Derived Forms
placidity (pləˈsɪdɪtɪ), placidness, noun
placidly, adverb
Word Origin
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
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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
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