thoughtlessness Synonyms

heedlessness negligence miscue meanness levity irresponsibility inunderstanding inobservance injudiciousness ingratitude indiscretion indifference perfunctoriness puerility rashness unwariness unreason unreadiness unproficiency unobservance temerity superficiality stupidity slovenliness sloppiness remissness indexterity incuriosity inconsideration hastiness giddiness forgetfulness foolishness foolhardiness foolhardihood folly flippancy flightiness fatuity clumsiness hemispheric idiocy impetuosity inconsiderateness incogitancy incaution inattention inanity inadvertency inadvertence