Could it be this?
mis·take   
noun
1.
an error in action, calculation, opinion, or judgment caused by poor reasoning, carelessness, insufficient knowledge, etc.
2.
a misunderstanding or misconception.
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mis·take   
noun
1.
an error in action, calculation, opinion, or judgment caused by poor reasoning, carelessness, insufficient knowledge, etc.
2.
a misunderstanding or misconception.
Sent from my iPad using iPF