[1] : The Collaborative International Dictionary of English v.0.48

unconcerned \un`concerned"\, a.
   not concerned; not anxious or solicitous; easy in mind;
   carelessly secure; indifferent; as, to be unconcerned at what
   has happened; to be unconcerned about the future. --
   un`concern"edly, adv. -- un`concern"edness, n.
   1913 webster

         happy mortals, unconcerned for more.     --dryden.
   1913 webster
see also:
un`concern"edly un`concern"edness 

[2] : WordNet (r) 2.0

unconcerned
     adj 1: lacking in interest or care or feeling; "the average
            american...is unconcerned that his or her plight is
            the result of a complex of personal and economic and
            governmental actions...beyond the normal citizen's
            comprehension and control"; "blithely unconcerned
            about his friend's plight" ant: concerned
     2: easy in mind; not worried; "the prisoner seems entirely
        unconcerned as to the outcome of the examination"
     3: not occupied or engaged with; "readers unconcerned with
        style"
see also:
concerned 

[3] : Moby Thesaurus II by Grady Ward, 1.0

77 moby thesaurus words for "unconcerned":
   laodicean, olympian, aloof, apathetic, ataractic, benumbed, blah,
   blase, bored, careless, casual, collected, comatose, composed,
   cool, degage, desensitized, detached, devil-may-care,
   disinterested, dispassionate, disregardful, distant, dull, easy,
   easygoing, free and easy, heartless, hebetudinous, heedless,
   hopeless, impassive, in a stupor, inattentive, incurious,
   indifferent, inexcitable, insouciant, lackadaisical, languid,
   lethargic, listless, mindless, negligent, nonchalant, numb, numbed,
   offhand, passive, perfunctory, phlegmatic, pluckless, pococurante,
   reckless, regardless, remote, resigned, slack, sluggish, soporific,
   spiritless, spunkless, stoic, stolid, stupefied, supine, torpid,
   turned-off, unanxious, uncaring, undiscriminating, uninquiring,
   uninterested, uninvolved, unmindful, unsolicitous, withdrawn

Unconcerned >> U Words
Unconcerned, definition of term: Unconcerned
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