Dictionary.net

an understanding of something that is not correct; "he wasn't going to admit his mistake"; "make no mistake about his intentions"; "there must be some misunderstanding--I don't have a sister"

an understanding of something that is not correct; "he wasn't going to admit his mistake"; "make no mistake about his intentions"; "there must be some misunderstanding--I don't have a sister"

n. Misunderstanding; erroneous notion or opinion regarding a fact or subject; -misconception; mistaken idea of the meaning, motives, or actions or another.