wouldn't dream of (doing something)

wouldn't dream of (doing something)

Would not dare consider doing something. I'm sure Mom didn't read that letter you got—she wouldn't dream of opening someone else's mail. A: "Now, don't go telling the boss our plan!" B: "I wouldn't dream of it!"
See also: dream, of
Farlex Dictionary of Idioms.

wouldn't dream of doing something

would not even consider doing something. I wouldn't dream of taking your money! I'm sure that John wouldn't dream of complaining to the manager.
See also: dream, of
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

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
The American Heritage® Dictionary of Idioms by Christine Ammer.

not ˈdream of something/of doing something

(often used with would) not even consider something under any circumstances: ‘Don’t tell Gary what I’ve bought him for his birthday.’ ‘I wouldn’t dream of it.’ Only a couple of years ago he would never have dreamt of going abroad on his own, and now he’s travelling around India!
See also: dream, not, of, something
Farlex Partner Idioms Dictionary
See also:
  • dare
  • do a dare
  • come over
  • empathize
  • empathize with
  • empathize with (someone or something)
  • let (someone) in on the act
  • ride on (one's) coattails
  • ride on coattails
  • ride on someone's/something's coat-tails