buoyance

Definitions

The power or tendency of a fluid to exert an upward force on a body placed in it.

The ability or tendency to float in water or air.

The quality of being cheerful, resilient, or optimistic.

Examples

The buoyance of the life jacket kept the swimmer afloat in the rough sea.

Engineers calculated the buoyance of the submarine to ensure it could submerge and surface safely.

The buoyance of the wooden log allowed it to drift effortlessly down the river.

Synonyms

resilience lightness optimism vivacity buoyancy elasticity cheerfulness

Antonyms

heaviness depression despondency gloom melancholy lethargy sinking