We use “confuse someone with someone else”. We do not use “confuse someone for someone else”.
I confused Jane with her twin sister Jessica.
I always confuse John with Peter, They look so alike.
Many people use the preposition “for” in this situation but you should use “for” with “mistake”.
I have mistaken you for your twin sister.
“Mistake someone for someone else” is slightly more formal than “confuse someone with someone else”.
Sorry, I thought you were someone else
If you are ever in a situation when you “confuse someone with someone else”, you can use “Sorry, I thought you were someone else” to let the person know that you were confused.
Conor is the main writer here at One Minute English and was an English teacher for 10 years. He is interested in helping people with their English skills and learning about using A.I tools at work.
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