verb
meddle
MED-ul/ˈmedl/
To interfere in other people's affairs without being asked.
My neighbor likes to meddle in everyone's business without being asked.

Etymology
Latin miscere meant “to mix.” Mixing became involvement in an affair, and excessive or intrusive involvement gave the word its surviving disapproving sense.
In context
henceforward keep to prodding thy ass and don’t meddle in what does not concern thee
More examples
- She meddles in her adult children's relationships.
- He meddled in a dispute that did not concern him.
- Please stop meddling in how we spend our money.
Forms
meddle · meddles · meddled · meddling
meddler noun — Someone who interferes without being asked.
meddlesome adjective — Too eager to interfere in others' affairs.