get (something) off one's chest, to

get something off one's chest

to unburden oneself; to confess something; to criticize or make a personal complaint to someone. You will feel better if you get it off your chest. I have to get this off my chest. I'm tired of your rudeness to me!
See also: chest, get, off
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

get (something) off (one's) chest

To vent one's pent-up feelings.
See also: chest, get, off
American Heritage® Dictionary of the English Language, Fifth Edition.

get (something) off one's chest, to

To unburden oneself of a secret, criticism, worry, or the like. The London Daily Chronicle of 1902 is cited by the OED: “To deliver a message to the world or to express the individual personality—to ‘get it off your chest’ is the horrid vulgar phrase.”
See also: get, off
The Dictionary of Clichés by Christine Ammer
See also:
  • leave (someone, something, or oneself) (wide) open for (something)
  • leave oneself wide open for
  • leave open
  • leave yourself wide open to something
  • leave (someone, something, or oneself) (wide) open to (something)
  • reproach (someone or something) with (something)
  • reproach with
  • keep (someone or something) in sight
  • keep sight of
  • keep sight of (someone or something)