none of one's business

/nˈʌn ɒv wˈɒnz bˈɪznəs/

/nˈʌn ʌv wˈʌnz bˈɪznəs/

none of one's business

used to tell someone that it is not necessary for them to know about something and that they should stop questioning about it

Examples

1. I told him it was none of his business.

2. I'm not going to tell you because, in the first place, it's none of your business, and in the second place, you would tell everyone else.

3. This is none of your business.

4. Hey, what happens between you guys and the bear is none of my business.