From Longman Dictionary of Contemporary Englishinterfere with something/somebody phrasal verb1 HARM/BE BAD FORto prevent something from succeeding or from happening in the way that was planned Anxiety can interfere with children’s performance at school.2 TCBSPOILif something interferes with a radio or television broadcast, it spoils the sound or picture that you receive3 British EnglishSYSCC to touch a child sexually He was arrested for interfering with young boys. → interfere→ See Verb table