ありきたりの (translations)→ anonymous common conservative garden-variety general indifferent mundane normal old ordinary plain standard vulgar
つまらない (translations)→ bad bleak boring disappoint disgusting fool foolish fucking futile goddam horrible inadequate intolerable menial pedantic peewee prosaic rubbishy tedious uninteresting unreadable wearisome wretched zilch
面白くない (translations)→ disapproval disturbing dull hate incurious unenjoyable unhappy unwelcome