Synonyms for Flippancy

Negligence
absentmindedness breach carelessness default deficiency delinquency dereliction flippancy impotence inactivity inadvertence inattention	incuriosity indifference inexpedience inobservance laxity laxness leniency loose ends looseness loosening malfeasance	misfeasance neglect negligence noncompliance nonconformity nonfeasance nonfulfillment noninterference nonobservance nonperformance omission	oversight passivity permissiveness procrastination relaxation shallowness softness superficiality unconcern unrestraint weakness

Superficiality
big deal deadness emptiness flippancy foolery foolishness	frivolity futility idleness inanity jest	levity lightness shallowness superficiality thinness	triviality vacancy vacuity vanity volatility