ob·tuse /ɑbˈtus, əb, ˈtjus/
  (a.)鈍的,不尖的,圓頭的
  ob·tuse /ɑbˈt(j)us, əb-/ 形容詞
  鈍頭(的),鈍形的,遲鈍的(智力)
  Ob·tuse a. [Compar. Obtuser superl. Obtusest.]
  1. Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.
  2. Not having acute sensibility or perceptions; not alert, especially to the feelings of others; dull; stupid; as, obtuse senses.
  3. Dull; deadened; as, obtuse sound.
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  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: 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, slow]