buoyancy

Meanings

Plural: buoyancies

Noun

• 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.

Synonyms

airiness, irrepressibility, perkiness

Related Words

Archimedes' principle, buoy, buoy up, buoyant