OBTUSE
- means difficult to understand or unable to understand what is obvious.
- is a formal word that describes someone who is not able to think clearly or to understand what is obvious or simple.
- dull (mentally slow) [adj OBTUSER, OBTUSEST] : OBTUSELY [adv]
- not perceptive
- not sharp
- (of an angle) between 90┬░ and 180┬░