つまらない (translations)→ bad bleak boring disappoint disgusting fool fucking futile goddam horrible inadequate intolerable menial pedantic peewee prosaic rubbishy tedious unexciting uninteresting unreadable wearisome wretched zilch
とんまな (translations)→ coltish dill stupid thickskulled
はしたない (translations)→ dirty terrible vulgar
ばかげた (translations)→ crazy fatuous nonsensical Pythonesque silly slushy
愚かな (translations)→ asinine lamebrained nonsense
馬鹿 (translations)→ absurd ass asshole dumbbell dummy foolishness idiotic naive people scum scumbag silliness simpleminded
無意味 (translations)→ meaningless unfairness