unthoughtful

from WordNet (r) 3.0 (2006)

unthoughtful
    adj 1: not exhibiting or characterized by careful thought [syn:
           {unreflective}, {unthinking}, {unthoughtful}]

from The Collaborative International Dictionary of English v.0.48

Unthoughtful \Unthoughtful\
   See {thoughtful}.

from Moby Thesaurus II by Grady Ward, 1.0

55 Moby Thesaurus words for "unthoughtful":
      arbitrary, capricious, careless, disregardful, forgetful, heedless,
      ill-advised, ill-considered, ill-contrived, ill-devised,
      ill-gauged, ill-judged, impolitic, imprudent, inadvertent,
      inadvisable, inconsiderate, indiscreet, inexpedient, injudicious,
      insensate, irrational, mindless, misadvised, misguided, myopic,
      reasonless, reckless, respectless, senseless, shortsighted,
      thoughtless, unaccommodating, unadvised, uncalculating,
      uncomplaisant, unconsidered, uncooperative, undiscerning,
      unforeseeing, unguarded, unheedful, unhelpful, unmindful,
      unobliging, unreasonable, unreasoning, unreflecting, unreflective,
      unseeing, unsensible, unsound, unthinking, unwise, witless