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

mindless \mind"less\, a.
   1. not indued with mind or intellectual powers; stupid;
      unthinking.
      1913 webster

   2. unmindful; inattentive; heedless; careless.
      1913 webster

            cursed athens, mindless of thy worth. --shak.
      1913 webster

[2] : WordNet (r) 2.0

mindless
     adj 1: lacking the thinking capacity characteristic of a conscious
            being; "the shrieking of the mindless wind"
     2: requiring little mental effort; "mindless tasks"
     3: not mindful or attentive; "while thus unmindful of his steps
        he stumbled"- g.b.shaw syn: unmindful, forgetful
        ant: mindful
     4: complacently or inanely foolish syn: asinine, fatuous,
        inane, vacuous
     5: not marked by the use of reason; "mindless violence";
        "reasonless hostility"; "a senseless act" syn: reasonless,
         senseless
see also:
unmindful forgetful mindful asinine fatuous inane 
vacuous reasonless senseless 

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

226 moby thesaurus words for "mindless":
   a stranger to, aimless, airy, aloof, anarchic, angry, animal,
   animalian, animalic, animalistic, apathetic, asinine, asleep,
   ataractic, beastlike, beastly, bestial, blase, blind to,
   blustering, blusterous, blustery, bored, brainless, brutal, brute,
   brutelike, brutish, careless, casual, caught napping, causeless,
   chaotic, cursory, dead to, deaf to, degage, designless, detached,
   devil-may-care, disinterested, dispassionate, disregardant,
   disregardful, distant, driftless, dumb, dysteleological, easygoing,
   fatuous, flippant, foolish, forgetful, frantic, free and easy,
   frenzied, fruity, furious, haphazard, headless, heedless, hellish,
   idiotic, ignorant, ill-advised, ill-considered, ill-contrived,
   ill-devised, ill-gauged, ill-judged, imbecilic, impassive,
   impercipient, impolitic, imprudent, in ignorance of, inadvisable,
   inattentive, incognizant, inconsiderate, incurious, indifferent,
   indiscreet, indiscriminate, inept, inexcitable, inexpedient,
   inexplicable, infuriate, injudicious, insensate, insensible,
   insensible to, insouciant, instinctive, instinctual, irrational,
   lackadaisical, lackbrained, lazy, lean-minded, lean-witted,
   listless, lunatic, mad, maniac, mental, misadvised, misguided,
   moronic, myopic, napping, negligent, nitwitted, non compos mentis,
   nonchalant, nonconceiving, nonrational, not bright, not with it,
   nuts, oblivious, obtuse, of little brain, offhand, orgasmic,
   orgastic, out of it, pandemoniac, pea-brained, perfunctory,
   phlegmatic, pin-brained, pococurante, promiscuous, purposeless,
   raging, random, ravening, raving, reasonless, reckless, regardless,
   respectless, rip-roaring, senseless, shortsighted, silly,
   slackminded, slackwitted, stochastic, stolid, storming, stormy,
   stray, stupid, subhuman, tactless, tempestuous, thick, thickheaded,
   thoughtless, troublous, tumultuous, turbulent, turned-off,
   unaccommodating, unaccountable, unadvised, unanxious, unaware,
   unaware of, uncomplaisant, unconcerned, unconscious,
   unconscious of, unconsidered, uncooperative, undiplomatic,
   undirected, undiscerning, undiscriminating, unforeseeing, ungifted,
   unhearing, unheedful, unheeding, unhelpful, uninquiring,
   uninsightful, unintellectual, unintelligent, uninterested,
   uninvolved, unknowing, unmindful, unmindful of, unmotivated,
   unobliging, unperceiving, unprehensive, unprepared, unready,
   unrealizing, unreasonable, unreasoning, unreflecting, unreflective,
   unseeing, unsensible, unsolicitous, unsound, unsuspecting,
   untactful, untalented, unthinking, unthoughtful, unwise, unwitting,
   uproarious, wild, withdrawn, witless, zoic, zooidal, zoologic

Mindless >> M Words
Mindless, definition of term: Mindless
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