D defs.my
Entry 3 senses Webster, 1913

Obtuse

/äb-to͞os'/ · Ob·tuse · IPA /əbˈt(j)us/
01 a. Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.
  1. 1.
    Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.
  2. 2.
    Not having acute sensibility or perceptions; not alert, especially to the feelings of others; dull; stupid; as, obtuse senses.
  3. 3.
    Dull; deadened; as, obtuse sound.