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Adjective: obtuse (obtuser,obtusest)  ub't(y)oos or ób't(y)oos
  1. Taking more than usual time to learn or understand; lacking intellectual acuity
    "he was either normally stupid or being deliberately obtuse";
    - dense, dim, dull, dumb, slow
     
  2. Of an angle; between 90 and 180 degrees
     
  3. (of a leaf shape) rounded at the apex
     
  4. Lacking in insight or discernment
    "too obtuse to grasp the implications of his behaviour";
    - purblind

Derived forms: obtusest, obtuser

See also: simple, stupid, undiscerning, unsubdivided

Antonym: acute

Encyclopedia: Obtuse