wouldn't be seen dead

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

wouldn't be seen dead idiom informal
If someone wouldn't be seen dead in a particular place or doing a particular thing, they would never do it, usually because it would be too embarrassing
• I wouldn't be seen dead wearing a dress like that.
Thesaurus⁺: ↑Yes, no and not
Main entry: see_idiom