untactful
     adj : lacking or showing a lack of what is fitting and considerate
           in dealing with others; "in the circumstances it was
           tactless to ask her age" syn: tactless ant: tactful
see also:
tactless tactful 

58 moby thesaurus words for "untactful":
   airy, blanket, brash, careless, casual, cursory, degage,
   disregardant, disregardful, easygoing, flippant, forgetful,
   free and easy, general, heedless, impolitic, imprudent,
   inconsiderate, indifferent, indiscreet, indiscriminate,
   indiscriminative, insensitive, insouciant, lazy, maladroit,
   nonjudgmental, oblivious, offhand, perfunctory, promiscuous,
   reckless, regardless, respectless, tactless, thoughtless,
   uncritical, uncriticizing, undemanding, undifferentiating,
   undiplomatic, undiscreet, undiscriminating, undiscriminative,
   unexacting, unfastidious, unheedful, unheeding, unmeticulous,
   unmindful, unparticular, unprepared, unready, unselective,
   unsolicitous, unsubtle, unthinking, wholesale