obtuse

obtuse
    adj 1: of an angle; between 90 and 180 degrees [ant: {acute}]
    2: (of a leaf shape) rounded at the apex
    3: lacking in insight or discernment; "too obtuse to grasp the
       implications of his behavior"; "a purblind oligarchy that
       flatly refused to see that history was condemning it to the
       dustbin"- Jasper Griffin [syn: {obtuse}, {purblind}]
    4: slow to learn or understand; lacking intellectual acuity; "so
       dense he never understands anything I say to him"; "never met
       anyone quite so dim"; "although dull at classical learning,
       at mathematics he was uncommonly quick"- Thackeray; "dumb
       officials make some really dumb decisions"; "he was either
       normally stupid or being deliberately obtuse"; "worked with
       the slow students" [syn: {dense}, {dim}, {dull}, {dumb},
       {obtuse}, {slow}]
    

Obtuse \Ob*tuse"\ a. [Compar. {Obtuser}; superl. {Obtusest}.]
   [L. obtusus, p. p. of obtundere to blunt: cf. F. obtus. See
   {Obtund}.]
   1. Not pointed or acute; blunt; -- applied esp. to angles
      greater than a right angle, or containing more than ninety
      degrees.
      [1913 Webster]

   2. Not having acute sensibility or perceptions; not alert,
      especially to the feelings of others; dull; stupid; as,
      obtuse senses. --Milton.
      [1913 Webster]

   3. Dull; deadened; as, obtuse sound. --Johnson.
      [1913 Webster] Obtuse-angled
    

118 Moby Thesaurus words for "obtuse":
      abrupt, affectless, anesthetized, arctic, asleep, autistic,
      benumbed, bluff, blunt, blunt-edged, blunt-ended, blunt-pointed,
      blunt-witted, blunted, bluntish, boneheaded, callous, catatonic,
      chill, chilly, cloddish, cold, cold as charity, cold-blooded,
      coldhearted, cool, dead, deadened, dense, dim, dim-witted,
      dispassionate, doltish, dopey, drugged, dull, dull of mind,
      dull-edged, dull-headed, dull-pated, dull-pointed, dull-witted,
      dulled, dullish, edgeless, emotionally dead, emotionless, faired,
      fat-witted, frigid, frosted, frosty, frozen, gross-headed,
      heartless, heavy, hebetudinous, icy, immovable, impassible,
      impassive, imperceptive, impercipient, inexcitable, insensate,
      insensible, insensitive, insentient, insusceptible, loutish,
      lumpish, mentally retarded, nonemotional, numb, numbed, oafish,
      obdurate, objective, out of touch, passionless, pointless, rounded,
      self-absorbed, simple, slow, slow-witted, sluggish, smoothed,
      soulless, spiritless, stolid, thick, thick-brained, thick-headed,
      thick-pated, thick-skinned, thick-witted, thickheaded,
      thickskulled, unaffectionate, unedged, unemotional, unfeeling,
      unfelt, unimpassioned, unimpressionable, unloving, unpassionate,
      unperceptive, unpointed, unresponding, unresponsive, unsharp,
      unsharpened, unsusceptible, unsympathetic, untouchable, wooden