blow out of proportion

blow (something) out of (all) proportion

To make something seem more important, negative, or significant than it really is; to exaggerate something or focus unnecessary attention on something. I'm sure he didn't mean anything by that comment—don't blow it out of proportion. Of course she's mad at me because I didn't call her back—you can always count on my mom to blow something out of all proportion!
See also: blow, of, out, proportion
Farlex Dictionary of Idioms.

blow out of proportion

To make more of than is reasonable; exaggerate.
See also: blow, of, out, proportion
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • a straw will show which way the wind blows
  • a ghost at the feast
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • a crack at (someone or something)
  • all right
  • (you) wanna make something of it?
  • all for the best
  • a thing of the past
  • a slew of (something)