What does "butt out" mean?

To stop interfering; mind one's own business.

Butt out

Common synonyms include: leave alone, leave well enough alone, let alone, let be, let well enough alone, live and let live.

verb, slang

verb, slang ·Uncommon ·College level

Verb

1
To stop interfering; mind one's own business. Canada, US, derogatory, intransitive, slang
"The government should butt out of people's private lives."

"The government should butt out of people's private lives."

Modelled after butt in.