ありきたりの の訳語→ anonymous common conservative garden-variety general indifferent mundane normal old ordinary plain standard vulgar
つまらない の訳語→ 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 の訳語→ disapproval disturbing dull hate incurious unenjoyable unhappy unwelcome