suru verbへいこう · heikou
Englishto be stumped; to be at a loss; to be at one's wits' end; to be nonplussed
- 彼はその問題で閉口していた。He was stumped by the problem.
Englishto be fed up; to be tired (of); to be unable to bear; to be annoyed
- 君のわがままには閉口する。I'm annoyed at your selfishness.
Source: JMdict (EDRDG) · CC BY-SA 4.0 (EDRDG)