Defn: To err in knowledge, perception, opinion, or judgment; to commit an unintentional error. Servants mistake, and sometimes occasion misunderstanding among friends. Swift.

MISTAKE
Mis*take", n.

1. An apprehending wrongly; a misconception; a misunderstanding; a fault in opinion or judgment; an unintentional error of conduct. Infallibility is an absolute security of the understanding from all possibility of mistake. Tillotson.

2. (Law)

Defn: Misconception, error, which when non-negligent may be ground for rescinding a contract, or for refusing to perform it. No mistake, surely; without fail; as, it will happen at the appointed time, and no mistake. [Low]

Syn.
— Blunder; error; bull. See Blunder.

MISTAKEN
Mis*tak"en, p.a.

1. Being in error; judging wrongly; having a wrong opinion or a misconception; as, a mistaken man; he is mistaken.

2. Erroneous; wrong; as, a mistaken notion.

MISTAKENLY
Mis*tak"en*ly, adv.