buoyancy

Plural: buoyancies

Noun

• The tendency of an object to float in liquid or air.
• cheerfulness that bubbles to the surface
• the property of something weightless and insubstantial
• the tendency to float in water or other liquid
• irrepressible liveliness and good spirit
  • "I admired his buoyancy and persistent good humor"
• The upward force on a body immersed or partly immersed in a fluid.
• The ability of an object to stay afloat in a fluid.
• Resilience or cheerfulness.

Examples

• Her spirits, much like her Scrabble score, showed great buoyancy after a seven-letter word play.

Synonyms

airiness, irrepressibility, perkiness

Related Words

Archimedes' principle, buoy, buoy up, buoyant