Synonyms of buoy
1
: float sense 2
especially, nautical : a floating object moored to the bottom to mark a channel or something (such as a shoal) lying under the water
swam out toward the buoy
2

Illustration of buoy

Illustration of buoy
  • buoy 1

buoy

2 of 2

verb

buoyed; buoying; buoys

transitive verb

1
: to mark by or as if by a float or buoy
buoy an anchor
2
a
: to keep afloat
a raft buoyed by empty oil drums
b
: support, uplift
… an economy buoyed by the dramatic postwar growth of industry …Time
3
: to raise the spirits of
usually used with up
hope buoys him up

intransitive verb

: float
usually used with up
They buoyed up like a cork.

Examples of buoy in a Sentence

Verb The tax breaks should help to buoy the economy.
Recent Examples on the Web
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Noun
These buoy-like devices move up and down, converting the motion of waves into electricity. ABC News, 26 Aug. 2026 Bruney was bleeding heavily, so fellow triathlete Matthew Davis, a wilderness first responder, used the cord on his swim buoy as a tourniquet, the outlet reported. Adam England, PEOPLE, 25 Aug. 2026
Verb
Three years ago, fans of the Philadelphia Phillies famously buoyed the spirits of underperforming shortstop Trea Turner by giving him the same kind of standing ovation. Los Angeles Times, 23 Aug. 2026 But Nixon’s upset victory has now buoyed already high Republican confidence in the state. Matt Brown, Fortune, 19 Aug. 2026 See All Example Sentences for buoy

Word History

Etymology

Noun and Verb

Middle English boye, probably from Middle Dutch boeye; akin to Old High German bouhhan sign — more at beacon

First Known Use

Noun

13th century, in the meaning defined at sense 1

Verb

1596, in the meaning defined at transitive sense 1

Time Traveler
The first known use of buoy was in the 13th century

Browse Nearby Words

Cite this Entry

“Buoy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buoy. Accessed 1 Sep. 2026.

Kids Definition

1
: a floating object anchored in a body of water to mark a channel or warn of danger
2

buoy

2 of 2 verb
1
: to keep from sinking : keep afloat
2
: to brighten the mood of
the news buoyed him up

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