Levity

n.	1.	The quality of weighing less than something else of equal bulk; relative lightness, especially as shown by rising through, or floating upon, a contiguous substance; buoyancy; - opposed to gravity. He gave the form of levity to that which ascended; to that which descended, the form of gravity. - Sir. W. Raleigh. This bubble by reason of its comparative levity to the fluidity that incloses it, would ascend to the top. - Bentley.
	2.	Lack of gravity and earnestness in deportment or character; trifling gayety; frivolity; sportiveness; vanity. He never employed his omnipotence out of levity. - Calamy.
	3.	Lack of steadiness or constancy; disposition to change; fickleness; volatility. The levity that is fatigued and disgusted with everything of which it is in possession. - Burke.

Noun	1.	levity - feeling an inappropriate lack of seriousness Antonyms: solemnity, gravity - a solemn and dignified feeling
	2.	levity - lightness of manner

absentmindedness, absurdity, airiness, amusement, ascent, banter, big deal, booing, bounce, breeziness, bubbliness, buoyancy, carefreeness, carelessness, catcalling, chaffing, changeableness, chirpiness, coquettishness, daintiness, debonairness, delicacy, derision, disregard, disregardfulness, distraction, downiness, emptiness, ethereality, facetiousness, faddishness, faddism, fickleness, fleering, flightiness, flimsiness, flippancy, floatability, fluffiness, foaminess, folly, fooling, foolishness, frivolity, frivolousness, frothiness, futility, gentleness, glee, gleefulness, gossameriness, grinning, heedlessness, high glee, hilariousness, hissing, hooting, idleness, inadvertence, inadvertency, inanity, inattention, inattentiveness, inconsideration, inconstancy, incuriosity, indifference, inobservance, jauntiness, jeering, jocularity, jocundity, jolliness, jollity, joshing, joviality, joy, joyfulness, joyousness, lack of weight, laughter, leering, levitation, light heart, lightheartedness, lightmindedness, lightness, lightsomeness, mercuriality, mercurialness, merriment, merriness, mirth, mirthfulness, mockery, negligence, nonobservance, nugacity, obliviousness, panning, perkiness, pertness, playfulness, prankishness, pranksomeness, ragging, raillery, rallying, razzing, regardlessness, resilience, ridicule, roasting, roguishness, scoffing, shallowness, silliness, skittishness, slenderness, slightness, smart-aleckiness, smartness, smirking, sneering, snickering, sniggering, snorting, softness, sportiveness, superficiality, taunting, tenderness, thoughtlessness, trickery, trickiness, triflingness, triteness, trivialization, trivialness, twitting, unalertness, unawareness, unconsciousness, undependability, unheaviness, unheedfulness, unintentiveness, unmindfulness, unobservance, unpredictability, unreliability, unwariness, unwatchfulness, vacuity, vanity, vapidity, volatility, waggery, waggishness, weightlessness, yeastiness