Obtuse /(?)/

Ob·tuse

Obtuse

a.
  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.