(education) The distinction drawn by some language teachers between an "error" (a mistaken belief that a given usage or construction is correct; or, an incorrect use resulting from such a belief) and "a mistake" (an accidental use of a usage or construction despite knowing that it is incorrect).

Used when someone's mistakes or flaws are acknowledged, as a reminder that everyone makes mistakes and has flaws.

When you notice that an enemy is making an error, take care not to interfere with the enemy from completing it so you can take advantage at the right time.

past participle of mistake

Erroneous. / (with a copula verb, often with about) Having an incorrect belief.

wrongly, erroneously / by accident, by mistake, in error (without intention to do so)

(archaic) third-person singular simple present indicative form of mistake

The state or condition of being mistaken.

Falsely believing that someone is someone else. / (law) A defense in criminal law based on this situation, claiming that any eyewitnesses to a crime incorrectly thought that they saw the defendant.

Without any mistakes.