buoyancy
Definitions
The ability or tendency of an object to float in water or other fluid.
The power of a fluid to exert an upward force on a body placed in it.
An optimistic and resilient attitude or disposition.
Examples
The life jacket provides enough buoyancy to keep the swimmer afloat.
Archimedes' principle explains the physics behind the buoyancy of objects in water.
The economic recovery showed a surprising amount of buoyancy despite the global market downturn.
Synonyms
lightness floatability resilience optimism buoyance uplift vivacity