insouciance

insouciance
    n 1: the cheerful feeling you have when nothing is troubling you
         [syn: {carefreeness}, {insouciance}, {lightheartedness},
         {lightsomeness}]
    

Insouciance \In`sou`ciance"\, n. [F.]
   Carelessness; heedlessness; thoughtlessness; unconcern.
   [1913 Webster]
    

103 Moby Thesaurus words for "insouciance":
      abandon, accidia, acedia, aloofness, apathy, ataraxia, ataraxy,
      benumbedness, blah, blahs, boredom, careless abandon, carelessness,
      casualness, comatoseness, cursoriness, detachment, disinterest,
      disinterestedness, dispassion, disregard, disregardfulness,
      dullness, easiness, easygoingness, forgetfulness, hastiness,
      heartlessness, hebetude, heedlessness, hopelessness, impassiveness,
      impassivity, inappetence, inattention, inconsiderateness,
      inconsideration, incuriosity, incuriousness, indifference,
      indifferentism, indifferentness, indiscrimination, inexcitability,
      intellectual inertia, lack of affect, lack of appetite,
      lack of foresight, lack of interest, lackadaisicalness,
      languidness, lassitude, laziness, lethargicalness, lethargy,
      listlessness, mindlessness, negligence, nonchalance, numbness,
      oblivion, offhandedness, passiveness, passivity, perfunctoriness,
      phlegm, phlegmaticalness, phlegmaticness, plucklessness,
      pococurantism, recklessness, regardlessness, resignation,
      resignedness, sloth, sluggishness, sopor, soporifousness,
      spiritlessness, sprezzatura, spunklessness, stolidity,
      stupefaction, stupor, supineness, tactlessness, thoughtlessness,
      torpidity, torpidness, torpor, unanxiousness, unconcern,
      unheedfulness, uninquisitiveness, uninterestedness, unmindfulness,
      unpreparedness, unreadiness, unsolicitousness, unsolicitude,
      unthinkingness, withdrawal, withdrawnness