[boo-ee, boi]


Nautical. a distinctively shaped and marked float, sometimes carrying a signal or signals, anchored to mark a channel, anchorage, navigational hazard, etc., or to provide a mooring place away from the shore.

verb (used with object)

to keep afloat or support by or as if by a life buoy; keep from sinking (often followed by up): The life jacket buoyed her up until help arrived.
Nautical. to mark with a buoy or buoys.
to sustain or encourage (often followed by up): Her courage was buoyed by the doctor's assurances.

verb (used without object)

to float or rise by reason of lightness.

Origin of buoy

1425–75; late Middle English boye a float < Middle French *boie, boue(e) < Germanic; akin to beacon
Related formsun·buoyed, adjective
Can be confusedboy buoy

Synonyms for buoy

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

Related Words for buoyed

bolster, boost, cheer, encourage, hearten, lift, prop, raise, support, sustain, uphold

Examples from the Web for buoyed

Contemporary Examples of buoyed

Historical Examples of buoyed

  • Then Pounddug Slough was kept thoroughly dredged and buoyed.

    The Woman-Haters

    Joseph C. Lincoln

  • It was just this which kept the girl from her pillow, buoyed by a feverish excitement.


    Louis Joseph Vance

  • He was floating, a pale red, velvety air caressed him and buoyed him.

    They Twinkled Like Jewels

    Philip Jos Farmer

  • Now all nets are “swum,” that is to say, all are above the warps and are buoyed on the surface.

  • Buoyed up by so much excitement, Johnnie managed to stand for a moment.

British Dictionary definitions for buoyed



a distinctively shaped and coloured float, anchored to the bottom, for designating moorings, navigable channels, or obstructions in a body of waterSee also life buoy


(tr usually foll by up) to prevent from sinkingthe belt buoyed him up
(tr usually foll by up) to raise the spirits of; hearten
(tr) nautical to mark (a channel or obstruction) with a buoy or buoys
(intr) to rise to the surface

Word Origin for buoy

C13: probably of Germanic origin; compare Middle Dutch boeie, boeye; see beacon
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 buoyed



late 13c., perhaps from either Old French buie or Middle Dutch boeye, both from West Germanic *baukna "beacon, signal" (see beacon). OED, however, supports Middle Dutch boeie, or Old French boie "fetter, chain" (see boy), "because of its being fettered to a spot."



late 16c., "to mark with a buoy," from buoy (n.). Meaning "rise up, lift, sustain" is from c.1600, perhaps influenced by Spanish boyar "to float," ultimately from the same source. In the figurative sense (of hopes, spirits, etc.) it is recorded from 1640s. Related: Buoyed; buoying.

Online Etymology Dictionary, © 2010 Douglas Harper