not good enough
成語所屬單字good
not good enough — 慣用語
1. not reaching the required standard or expectation, often implying disappointment
1.慣用語
釋義
不夠好；不達標
not reaching the required standard or expectation, often implying disappointment or the need for improvement.
例句
His explanation for being late was simply not good enough.
The quality of this report is not good enough for a final submission.