Main entry: irrepressibility, buoyancy
Definition: irrepressible liveliness and good spirit
Usage: I admired his buoyancy and persistent good humor
Main entry: buoyancy
Definition: the tendency to float in water or other liquid
Main entry: airiness, buoyancy
Definition: the property of something weightless and insubstantial
Main entry: buoyancy, perkiness
Definition: cheerfulness that bubbles to the surface