トイレに立たつ

expression, godan verb (-tsu)

go to the bathroom; go to the restroom; excuse oneself

A polite, indirect way to say one is going to the toilet, often used in social or formal settings.

• 会かい議ぎ中ちゅうに、彼かれは「トイレに立たちます」と言いって席せきを外はずした。

  During the meeting, he excused himself, saying 'I'll go to the restroom.'

• すみません、ちょっとトイレに立たってもいいですか。

  Excuse me, may I go to the bathroom for a moment?