JMdict: 1508660

閉口 【へいこう】

  1. [vs,vi,n,adj-na] to be stumped; to be at a loss; to be at one's wits' end; to be nonplussed
  2. [vs,vi,n,adj-na] to be fed up; to be tired (of); to be unable to bear; to be annoyed
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
閉 Closed, Shut ヘイ と.じる, と.ざす, し.める, し.まる, た.てる 6
口 Mouth コウ, ク くち 1