I know we can use confuse A with B to mean to mistake A for B, but I would like to use the passive voice.

Is the following sentence correct grammatically (and/or idiomatic)?

I was confused about the concept with another one.

  • 1
    Hi technophyle! Do you want to edit your question and tell us why you want to make a passive construction? We usually make passive constructions when we have an action (like confuse) and the person or thing performing the action is not the subject of a sentence. This becomes complicated because confuse can be a stative verb, not always descriptive of an action. Feb 1, 2016 at 10:59
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    My first thought was the "passive" form would be A was confused with B (or B was confused with A). But that's not really right. I don't think there actually is a single-word English verb meaning to mutually misclassify two things that can be "passivized" in this way, so the best I can come up with is A and B were mistaken for each other (or ...each mistaken for the other). Feb 1, 2016 at 16:38

2 Answers 2


I was confused about the concept with another one.

I won't downvote your question, but I would downvote that sentence. However, you could say:

I was confused about the two concepts.

Here's the problem with the original: You can't use the X with Y construct as the object the prepositional phrase beginning with about (at least, you can't do so in this particular context).

  • 1
    Another way to express it would be A and B was confusing to me.
    – LawrenceC
    Feb 1, 2016 at 11:08
  • Thanks for your answer J.R. But what I would like to say is I mistook A for B, not A and B. Feb 1, 2016 at 15:06
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    If that's what you want to say, then that's what you should say: I mistook A for B (or, perhaps, I confused A with B). But that's not what you originally asked about here.
    – J.R.
    Feb 1, 2016 at 16:11

"I was confused about the concept with another one"-The stress goes on the user that he is confused about something and listener is not made sure on which he is confused. So it would be perfect to use " I was confused about the given concept with another one.

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