JMdict: 2417350

口は災いの元 【くちはわざわいのもと】

  1. [exp] words can lead to disaster; the tongue is the root of calamities; the more you open your mouth the more likely you are to put your foot in it
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
口 Mouth コウ, ク くち 1
災 Disaster, Calamity, Woe, Curse, Evil サイ わざわ.い 5
元 Beginning, Former Time, Origin ゲン, ガン もと 2