- thoughtless
- I(New American Roget's College Thesaurus)adj. rash, reckless, heedless; casual; inconsiderate, unthinking, mindless; unreasoning; careless, indifferent. See rashness.II(Roget's IV) modif.1. [Destitute of thought]Syn. irrational, unreasoning, unreasonable, vacuous, inane, incomprehensible, witless, undiscerning, bovine, foolish, doltish, babbling, bewildered, confused, puerile, senseless, driveling, inept, dull, heavy, obtuse, feeble-minded, flighty, empty-headed*, lame-brained*, barmy*, nutty*, loony*, rattled*, sappy*, dizzy*; see also stupid 1 .Ant. rational*, reasoning, shrewd.2. [Inconsiderate]Syn. heedless, negligent, inattentive, careless, indiscreet, neglectful, self-centered, egocentric, selfish, asocial, antisocial, unmindful, unheeding, reckless, deaf, blind, indifferent, unconcerned, listless, apathetic, boorish, discourteous, rude, primitive, unrefined; see also rude 2 .Ant. careful*, thoughtful, unselfish.III(Roget's 3 Superthesaurus) a.inconsiderate, insensitive, unthinking, selfish, inattentive, careless, negligent, heedless, oblivious, rude, impolite, discourteous.ANT.: thoughtful, considerate, attentiveIV(Roget's Thesaurus II) adjective 1. Lacking or marked by a lack of care: careless, feckless, heedless, inattentive, irresponsible, reckless, unconcerned, unmindful, unthinking. See CAREFUL. 2. Devoid of consideration for others' feelings: disregardful, inconsiderate, unthinking, unthoughtful. See CAREFUL, COURTESY.
English dictionary for students. 2013.