沉闷的，乏味的，无趣的，枯燥的

1. dull, uninteresting, boring, tedious

adjective (keiyoushi) word usually written using kana alone

2. insignificant, unimportant, trifling, trivial, worthless

adjective (keiyoushi) word usually written using kana alone

3. absurd, foolish, silly, stupid

adjective (keiyoushi) word usually written using kana alone

4. useless, pointless, disappointing

adjective (keiyoushi) word usually written using kana alone