Confess everything, as in If you come clean about what happened I will promise to keep it to myself. [Slang; early 1900s]
Words nearby come clean
How to use come clean in a sentence
Meanwhile, in Florida, Bush was flooded with questions about whether gay marriage could possibly come to the Sunshine State.
These generally come from the outside, from cultural pressures and messages.How Skinny Is Too Skinny? Israel Bans ‘Underweight’ Models|Carrie Arnold|January 8, 2015|DAILY BEAST
But there is an underlying feeling that the worst is yet to come.
With Charlie Hebdo, “you really have a clean case here,” Shearer said.
My agent at the time sent that tape to SNL and then they asked me to come in for an audition.Coffee Talk with Fred Armisen: On ‘Portlandia,’ Meeting Obama, and Taylor Swift’s Greatness|Marlow Stern|January 7, 2015|DAILY BEAST
In their shelter, Brion and Ulv crouched low and wondered why the attack didn't come.Sense of Obligation|Henry Maxwell Dempsey (AKA Harry Harrison)
Babylas raised his pale face; he knew what was coming; it had come so many times before.St. Martin's Summer|Rafael Sabatini
He reached forward and took her hands, and if Mrs. Vivian had come in she would have seen him kneeling at her daughter's feet.Confidence|Henry James
Vicars' wives had come and gone, but all had submitted, some after a brief struggle, to old Mrs. Wurzel's sway.The Pit Town Coronet, Volume I (of 3)|Charles James Wills
This wasn't at all what he meant to say, and it sounded very ridiculous; but somehow the words wouldn't come straight.Davy and The Goblin|Charles E. Carryl