D defs.my
Entry 2 senses Webster, 1913

Mistaken

/mĭs-tāk'-ən/ · Mis·tak·en · IPA /mɪˈsteɪkn̩/
01 p.a. Being in error; judging wrongly; having a wrong opinion or a misconception; as, a mistaken man; he is mistaken.
  1. 1.
    Being in error; judging wrongly; having a wrong opinion or a misconception; as, a mistaken man; he is mistaken.
  2. 2.
    Erroneous; wrong; as, a mistaken notion.