1. (n.) The quality or state of being indifferent, or not making a difference; want of sufficient importance to constitute a difference; absence of weight; insignificance.

2. (n.) Passableness; mediocrity.

3. (n.) Impartiality; freedom from prejudice, prepossession, or bias.

4. (n.) Absence of anxiety or interest in respect to what is presented to the mind; unconcernedness; as, entire indifference to all that occurs.

Laodiceanism abandon abeyance absentmindedness abstraction abulia acedia alienation aloofness anxiety anxiety equivalent anxiety state apathy ataraxia ataraxy benumbedness blah blahs boredom callousness careless abandon carelessness casualness catalepsy catatonia catatonic stupor coldness comatoseness compulsion coolness cursoriness deadliness deathliness dejection depression detachment disinterest disinterestedness dispassion dispassionateness disregard disregardfulness distraction dormancy drowsiness dullness easiness easygoingness elation emotionalism enervation ennui entropy equitability equitableness euphoria evenhandedness fairishness fairness fatigue flightiness flippancy folie du doute forgetfulness frivolousness giddiness hastiness heartlessness heaviness hebetude heedlessness hopelessness hypochondria hysteria hysterics immateriality impartiality impassiveness impassivity impotence imprecision inadvertence inadvertency inanimation inappetence inattention inattentiveness inconsequence inconsequentiality inconsiderableness inconsiderateness inconsideration incuriosity incuriousness indevotion indevoutness indifferentism indifferentness indolence ineffectuality inertia inertness inferiority inobservance insensibility insignificance insouciance intellectual inertia irrelevance jadedness lack of appetite lack of foresight lack of interest lackadaisicalness lackluster languidness languishment languor languorousness lassitude latency laxity laxness laziness leniency lenitude lentor lethargicalness lethargy levity lifelessness lightmindedness listlessness littleness looseness loosening lotus-eating low priority lukewarm piety mania marginality mediocreness mediocrity melancholia mental distress middlingness moderateness modestness modesty negligence negligibility neutrality nonchalance nonobservance nonreligiousness numbness objectivity oblivion obliviousness obsession offhandedness oscitancy overindulgence overpermissiveness passableness passiveness passivity pathological indecisiveness perfunctoriness permissiveness pettiness phlegm phlegmaticalness phlegmaticness picayune picayunishness plucklessness pococurantism pokiness preoccupation psychalgia psychomotor disturbance puniness recklessness regardlessness relaxation relaxedness remissness resignation resignedness respectability satedness secondariness shallowness slackness sleepiness slightness sloppiness sloth slothfulness slowness sluggishness smallness softness somnolence sopor soporifousness spiritlessness sprezzatura spunklessness stagnancy stagnation stasis stolidity stupefaction stupor superficiality supineness suspense tactlessness tediousness thoughtlessness tic tolerableness torpidity torpidness torpitude torpor triviality twitching unalertness unawareness unbiasedness unconcern unconsciousness undevoutness undutifulness unheedfulness unimportance unimpressiveness uninquisitiveness unintentiveness uninterestedness unmindfulness unnoteworthiness unobservance unopinionatedness unprejudicedness unpreparedness unreadiness unreligiousness unresponsiveness unrestraint unsolicitousness