tell it like it is, to

tell it like it is

To speak bluntly, directly, and truthfully, even if what is being said is undesirable to the listener. I always respect employees who are willing to tell it like it is, rather than trying to sugarcoat everything to save a little face. I tell it like it is, and that rubs a lot of people the wrong way.
See also: like, tell
Farlex Dictionary of Idioms.

Tell it like it is.

Inf. Speak frankly.; Tell the truth no matter who is criticized or how much it hurts. Come on man, tell it like it is! Well, I've got to tell it like it is.
See also: like, tell
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

tell it like it is

Speak the truth, no matter how unpleasant. For example, We're obligated to tell it like it is to the stockholders. [Slang; second half of 1900s]
See also: like, tell
The American Heritage® Dictionary of Idioms by Christine Ammer.

tell it like it is

describe the true facts of a situation no matter how unpleasant they may be. informal
See also: like, tell
Farlex Partner Idioms Dictionary

tell it like it is, to

To tell the truth even though it is unpleasant. Linguistics professor Margaret G. Lee lists this among the verbal expressions borrowed from African-American English (American Speech, winter 1999). It undoubtedly gained currency as the title of a number-one rhythm and blues hit of 1967, and has become a standard and somewhat overused colloquialism. Jane Smiley played on it in Horse Heaven (2000): “He wasn’t a funny guy like Baffert, but they always said he ‘is peppery and straightforward,’ ‘pulls no punches,’ ‘tells it like it is.’” See also pull no punches; unvarnished truth.
See also: like, tell
The Dictionary of Clichés by Christine Ammer
See also:
  • tell it how it is
  • tell it how/like it is
  • tell it like it is
  • Tell it like it is!
  • TILII
  • I don't suppose
  • spill (one's) guts on (someone or something)
  • spill one’s guts on someone
  • spill one’s guts to someone
  • spill (one's) guts to (someone)