'Mistaken' definitions:

Definition of 'mistaken'

adjective

Wrong in e.g. opinion or judgment; "well-meaning but misguided teachers"; "a mistaken belief"; "mistaken identity" [syn: misguided, mistaken]

adjective

Arising from error; "a false assumption"; "a mistaken view of the situation" [syn: false, mistaken]

From: GCIDE

Mistake \Mis*take"\ (m[i^]s*t[=a]k"), v. t. [imp. & obs. p. p. Mistook (m[i^]s*t[oo^]k"); p. p. Mistaken (m[i^]s*t[=a]k"'n); p. pr. & vb. n. Mistaking.] [Pref. mis- + take: cf. Icel. mistaka.]
1. To take or choose wrongly. [Obs. or R.] --Shak. [1913 Webster]
2. To take in a wrong sense; to misunderstand misapprehend, or misconceive; as, to mistake a remark; to mistake one's meaning. --Locke. [1913 Webster]
My father's purposes have been mistook. --Shak. [1913 Webster]
3. To substitute in thought or perception; as, to mistake one person for another. [1913 Webster]
A man may mistake the love of virtue for the practice of it. --Johnson. [1913 Webster]
4. To have a wrong idea of in respect of character, qualities, etc.; to misjudge. [1913 Webster]
Mistake me not so much, To think my poverty is treacherous. --Shak. [1913 Webster]

From: GCIDE

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. [1913 Webster]
2. Erroneous; wrong; as, a mistaken notion. [1913 Webster]