noun

buoyancy

BOY-uhn-see

noun

The upward force that lets an object float or feel lighter in a liquid or gas.

"A life jacket adds buoyancy so a swimmer stays afloat."

A cheerful, resilient mood or lively confidence.

"Despite the setback, she kept a natural buoyancy."

How to Use Buoyancy

Learner’s notes

In plain EnglishThe physical ability to float, or a figurative sense of high spirits.

Common pairings

positive buoyancy natural buoyancy

buoyancies plural

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A life jacket adds _____ so a swimmer stays afloat.

Formed from "buoyant" plus the noun ending "-cy".

nancy fancy Yancy clancy vacancy infancy vagrancy constancy pregnancy occupancy redundancy expectancy