of all
成語所屬單字of
of all — 慣用語
1. Used before a noun to emphasize that something is very surprising or unexpected.
1.慣用語
釋義
在所有...中（竟然）
Used before a noun to emphasize that something is very surprising or unexpected.
例句
Maya, of all people, decided to quit her job.
Why would you, of all people, defend that idea?