adj.
   - annoyingly insensitive or slow to understand.
- (of an angle) more than 90° and less than 180°.
- not sharp-pointed or sharp-edged; blunt.
Derivative
  
    - obtusely adv.
- obtuseness n.
- obtusity n.
 
  Etymology
  ME: from L. obtusus, obtundere, from ob- ‘against’ + tundere ‘to beat’.