perish the thought
US /ˈper.ɪʃ ðə θɔːt/
UK /ˈper.ɪʃ ðə θɔːt/

1.
休想, 萬萬不可
used to say that you hope that something bad will not happen or is not true
:
•
Me, a politician? Perish the thought!
我,一個政客?休想!
•
He suggested we might fail, but perish the thought!
他暗示我們可能會失敗,但休想!