frivolity

Silliness is defined as engaging in "a ludicrous folly", showing a "lack of good sense or judgment", or "the condition of being frivolous, trivial, or superficial". In television, film, and the circus, portrayals of silliness such as exaggerated, funny behavior are used to amuse audiences. Portrayals of silliness, provided by clowns and jesters, are also used to lift the spirits of people in hospitals.