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meddle in (something)
To involve oneself in some situation or activity, especially that which one is not meant or welcome to be involved in. I would have gotten away with the money laundering if you hadn't gone meddling in the company's financial affairs! My parents are always meddling in my love life, trying to set me up on dates with guys I have no interest in.
meddle with (someone or something)
To interfere or involve oneself with someone or something in an intrusive, unwelcome, or unsolicited manner. I would have gotten away with the money laundering if you hadn't gone meddling with the financial accounts! I wouldn't meddle with them if you know what's good for you—they have enough money and power to cause some real problems for you.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
meddle in something
to intrude [oneself] into something. I wish you wouldn't meddle in my affairs. Go meddle in someone else's business.
meddle with someone or something
to interfere with someone or something; to mess around with someone or something. Please don't meddle with me. I am in a bad mood. Would you please stop meddling with my computer?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.