Open English Wordnet
Nouns
(n)misinterpretation, misunderstanding, mistakingputting the wrong interpretation on“his misinterpretation of the question caused his error”, “there was no mistaking her meaning”
(n)mistake, misunderstanding, misapprehensionan 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”