noun
Synonyms: lightness , flightiness, frivolity, levity, light-mindedness, volatility
Related Word: archness, pertness, sauciness; impishness, mischievousness, playfulness, roguishness, waggishness; cheekiness, cockiness, freshness
Contrasted words: earnestness, gravity, soberness, solemnity
Antonyms: seriousness