言いい間ま違ちがえる

ichidan verb, transitive verb

misspeak; say mistakenly; make a slip of the tongue

Used when someone accidentally says the wrong word, name, or fact. Often implies a simple verbal mistake rather than intentional misstatement.

• 緊きん張ちょうして、相あい手ての名な前まえを言いい間ま違ちがえてしまった。

  I was nervous and accidentally said the other person's name wrong.

• 会かい議ぎで数すう字じを言いい間ま違ちがえたので、すぐに訂てい正せいした。

  I misspoke the numbers at the meeting, so I corrected myself right away.