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buoyant

[boi-uh nt, boo-yuh nt]
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adjective
  1. tending to float in a fluid.
  2. capable of keeping a body afloat, as a liquid.
  3. not easily depressed; cheerful.
  4. cheering or invigorating.

Origin of buoyant

First recorded in 1570–80; buoy + -ant
Related formsbuoy·ant·ly, adverbnon·buoy·ant, adjectivenon·buoy·ant·ly, adverbun·buoy·ant, adjectiveun·buoy·ant·ly, adverb

Synonyms

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3. happy, lighthearted, breezy, jaunty, sunny.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for buoyant

Contemporary Examples

Historical Examples

  • I breathed freely, and my form seemed to expand itself with buoyant life.

    Philothea

    Lydia Maria Child

  • Light and buoyant as the child was, her tightened clasp had begun to tell on him.

    Malbone

    Thomas Wentworth Higginson

  • It was difficult to remain long angry with so buoyant a nature.

  • Hydrogen is the lightest and consequently the most buoyant of all known gases.

    Flying Machines

    W.J. Jackman and Thos. H. Russell

  • Nor, as the days went by, did this buoyant happiness ever fail him.

    The Underdog

    F. Hopkinson Smith


British Dictionary definitions for buoyant

buoyant

adjective
  1. able to float in or rise to the surface of a liquid
  2. (of a liquid or gas) able to keep a body afloat or cause it to rise
  3. cheerful or resilient

Word Origin

C16: probably from Spanish boyante, from boyar to float, from boya buoy, ultimately of Germanic origin
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 buoyant

adj.

1570s, perhaps from Spanish boyante, present participle of boyar "to float," from boya "buoy," from Dutch boei (see buoy (n.)). Of personalities, etc., from c.1748. Related: Buoyantly.

Online Etymology Dictionary, © 2010 Douglas Harper