mistakenly

to think that something is true when it is not

يفترض خطأ

to think that something is true, especially when you do not have enough information to be sure

الاعتقاد بشكل غير صحيح أن شيئًا ما صحيح

to incorrectly recognize someone or something

to wrongly decide on the intended meaning of something

ينسب خطأ

to incorrectly think that something is the result of a particular thing

الاعتقاد الخاطئ بأن شيئًا ما هو نتيجة لشيء معين

to wrongly consider one thing to be the same as another

to drop bombs on the wrong target by accident