incompetent

無能的、不勝任的、能力不足的

The manager was simply incompetent and lost the team's trust.

那位主管根本就是無能，失去了團隊的信任。

拙劣的、差勁的

The repairs were so incompetent that the roof leaked again.

修繕工程做得太差勁，屋頂又開始漏水了。

無行為能力的、無資格的法律

The court ruled that he was mentally incompetent to stand trial.

法院裁定他心智狀況無能力接受審判。

無能的人、庸才

He dismissed his critics as a bunch of incompetents.

他把批評他的人一概說成是一群庸才。