the mother of (all) something
成語所屬單字mother
the mother of (all) something — 慣用語
1. Used to emphasize that something is extremely large, bad, or important.
1.慣用語
釋義
極其（大/糟/重要）的
Used to emphasize that something is extremely large, bad, or important.
例句
We hit the mother of all potholes on the highway.
The team faced the mother of all challenges in the final match.