wouldn't dream of

wouldn't dream of (doing something)

Wouldn't even consider doing something in particular (stated after "of"). I'm sure Mom didn't read that letter you got—she wouldn't dream of opening someone else's mail.See also: dream, of

wouldn't dream of

Also, not dream of. Not occur to one, not consider, as in Even if it were lying open on my desk, I wouldn't dream of reading another person's letter . This expression uses dream of in the sense of "remotely think of." [First half of 1500s] See also: dream, of