Synonyms and related words :
amusement, asininity, battiness, big deal, brainlessness, buffoonery, clownishness, crackpottedness, crankiness, craziness, daffiness, dallying, desipience, eccentricity, emptiness, fatuity, fatuousness, flightiness, flimsiness, flippancy, flirting, folly, foolery, foolheadedness, foolishness, frivolousness, fun, futility, game, giddiness, glee, gleefulness, goofiness, high glee, hilariousness, hilarity, idiocy, idleness, imbecility, inanity, ineptitude, insanity, jest, jocularity, jocundity, jolliness, jollity, joviality, joy, joyfulness, joyousness, laughter, levity, lightness, lunacy, madness, merriment, merriness, mindlessness, mirth, mirthfulness, niaiserie, nugacity, nuttiness, play, playfulness, prankishness, pranksomeness, queerness, roguishness, sappiness, screwiness, senselessness, shallowness, silliness, slenderness, slightness, sport, sportiveness, stupidity, superficiality, thoughtlessness, toying, trickery, trickiness, trifling, triflingness, triteness, triviality, trivialness, vacuity, vanity, vapidity, volatility, wackiness, waggery, waggishness, weirdness, witlessness, zaniness, zanyism