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English definition of “muddle sb/sth up”

muddle sb/sth up

verb uk phrasal verb with muddle   /ˈmʌd.l̩/ us  
C2 to think that a person or thing is someone or something else because the two people or things are very similar: I often muddle up Richard with his brother. It's easy to muddle up some Spanish and Italian words.
(Definition of muddle sb/sth up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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