what one doesn't know won't hurt one
what (someone) doesn't know won't hurt them
Remaining ignorant or uninformed about something will allow someone to not have to worry about, feel responsible for, or get upset by it. A: "Where are you going?" B: "It's better that you stay in the dark about this. What you don't know won't hurt you." A: "Mom will freak out if she finds out that you took the car without asking!" B: "Of course she will. But what Mom doesn't know won't hurt her."
See also: hurt, know, what
Farlex Dictionary of Idioms.
what one doesn't know won't hurt one
Cliché Unknown facts cannot worry or upset a person. Don't tell me that I have made a mistake. What I don't know won't hurt me. Don't tell him the truth about his missing dog. What he doesn't know won't hurt him.
See also: hurt, know, one, what
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
- what (someone) doesn't know can't hurt them
- what (someone) doesn't know won't hurt them
- What you don't know won't hurt you
- what the eye doesn't see
- what the eye doesn't see, the heart doesn't grieve over
- stay in the dark
- stay in the dark about (something)
- keep (someone) in the dark (about something)
- keep in the dark
- keep someone in the dark