钝

钝 [dùn] 形

1. ■ （不锋利） blunt; dull:

成败利钝 success or failure, sharp or dull -- victory or defeat;

刀钝了。 The knife is blunt.

2. ■ （笨拙;不灵活） stupid; dull-witted:

迟钝 dull-witted; slow