/ ˈmedl; NAmE / verb [ v ] ( disapproving )
1.
meddle (in / with sth) ( disapproving ) to become involved in sth that does not concern you
SYN interfere :
He had no right to meddle in her affairs.
2.
meddle (with sth) to touch sth in a careless way, especially when it is not yours or when you do not know how to use it correctly :
Somebody had been meddling with her computer.
► med·dling noun [ U ]
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WORD ORIGIN
Middle English (in the sense mingle, mix ): from Old French medler , variant of mesler , based on Latin miscere to mix.