obtuse
英 [əb'tjuːs]
美 
	    - adj. 迟钝的;圆头的;不锋利的
 
英英释意
- 1. of an angle; between 90 and 180 degrees
 
- 2. of a leaf shape; rounded at the apex
 
- 3. lacking in insight or discernment;
 - "too obtuse to grasp the implications of his behavior"
 - "a purblind oligarchy that flatly refused to see that history was condemning it to the dustbin"- Jasper Griffin
 
- 4. slow to learn or understand; lacking intellectual acuity;
 - "so dense he never understands anything I say to him"
 - "never met anyone quite so dim"
 - "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray
 - "dumb officials make some really dumb decisions"
 - "he was either normally stupid or being deliberately obtuse"
 - "worked with the slow students"