not mince your words

not mince words

To speak very bluntly and directly, without regard for someone else's feelings. A possessive adjective can be used between "mince" and "words." Wow, your aunt really doesn't mince words. Is my sweatshirt really that ugly? Let me know what you think of the story when you're done, and, please, don't mince your words.
See also: mince, not, word
Farlex Dictionary of Idioms.

not mince your words

or

not mince words

COMMON If you do not mince your words or do not mince words, you state your opinions clearly and directly, even if it offends people. She told him exactly where he'd gone wrong and she didn't mince her words. You always know you'll get the truth from Dan. He's not one to mince his words. I tell it like it is. I don't mince words.
See also: mince, not, word
Collins COBUILD Idioms Dictionary, 3rd ed.

not mince your ˈwords

(also not ˈmince matters) speak openly or directly; say what you think, even though you may offend somebody: Sir John, never a man to mince his words, said in a TV interview that the government had lied. I won’t mince matters: I think it’s a stupid idea. OPPOSITE: pull your punches
See also: mince, not, word
Farlex Partner Idioms Dictionary
See also:
  • mince words, not to
  • not mince words
  • not mince matters
  • mince matters
  • lay (one's) eyes on (something)
  • lay eyes on
  • word is good
  • cast pearls before swine
  • cast pearls before swine, to
  • pearl