間違まちがえる
machigaeru

Ichidan Verb

1. to make a mistake (in); to commit an error; to get wrong; to do incorrectly

Transitive
かれこたえをみっ間違まちがえた。
karewa kotaeo mittsu machigaeta.
He gave three wrong answers.
Ichidan Verb

2. to mistake (one thing for another); to confuse

Transitive
彼女かのじょ砂糖さとうしお間違まちがえた。
kanojowa satōo shioto machigaeta.
She mistook the sugar for salt.