obtuse
adj//-ˈtʃuːs//trubbig, slö, tjockskallig, trög, dov
(geometry, specifically, of an, angle) Larger than one, and smaller than two right angles, or more than 90° and less than 180°.
(botany, zoology) Blunt, or rounded at the extremity.
Intellectually dull or dim-witted.
Of sound, etc.: deadened, muffled, muted.