[ boi-uhnt, boo-yuhnt ]
/ ˈbɔɪ ənt, ˈbu yənt /


tending to float in a fluid.
capable of keeping a body afloat, as a liquid.
not easily depressed; cheerful.
cheering or invigorating.

Origin of buoyant

First recorded in 1570–80; buoy + -ant

Related forms

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for buoyant

British Dictionary definitions for buoyant


/ (ˈbɔɪənt) /


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

Word Origin for buoyant

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