wouldn't be seen dead (doing something)

wouldn't be seen dead (doing something)

Would never (do the thing being discussed). I wouldn't be seen dead wearing that shirt. You can burn it for all I care. She had always said she wouldn't be seen dead working for that company, but I guess everyone has their price.
See also: dead, seen
Farlex Dictionary of Idioms.

would not be seen dead (doing something)

 and would not be caught dead (doing something)
would not do something under any circumstances. I wouldn't be seen dead going out with Bruno! Martha would not be caught dead going into a place like that.
See also: dead, not, seen
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

wouldn't be seen dead

or

wouldn't be caught dead

COMMON If you say that you wouldn't be seen dead or wouldn't be caught dead in particular clothes, places, or situations, you are emphasizing that you strongly dislike or disapprove of them. I wouldn't be seen dead in a black straw hat. The modern cowboy wouldn't be caught dead in such an old-fashioned place. There's many a dad who wouldn't be seen dead wheeling a baby in a pram through the park.
See also: dead, seen
Collins COBUILD Idioms Dictionary, 3rd ed.

would not be seen dead

phr. would not do something under any circumstances. I wouldn’t be seen dead going out with Spike!
See also: dead, not, seen
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • would not be seen dead
  • wouldn't be seen dead
  • wouldn't be seen dead in
  • wouldn't be caught dead in (something)
  • dead
  • take (one) for dead
  • take for dead
  • taken for dead
  • the quick and the dead
  • quick and the dead, the