mistake
/mə-ˈstāk/
verb
to blunder in the choice of
to misunderstand the meaning or intention of : misinterpret
to make a wrong judgment of the character or ability of
mistook her way in the dark
noun
a wrong judgment : misunderstanding
a wrong action or statement proceeding from faulty judgment, inadequate knowledge, or inattention
error mistake blunder slip lapse mean a departure from what is true, right, or proper. error suggests the existence of a standard or guide and a straying from the right course through failure to make effective use of this. mistake implies misconception or inadvertence and usually expresses less criticism than error.
idiom
—used to stress the truth or accuracy of a statement