Mistaken, 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.
Shades of meaning
Fernald has no entry of its own for mistaken; he lists it under absurd.
He lists it without comment; the entries above explain its neighbors.