JMdict: 2112320

物を言う 【ものをいう】

  1. [exp,v5u] to speak (of something)
  2. [exp,v5u] to be effective; to be powerful; to be helpful; to be important; to matter; to mean everything
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Thing, Object, Matter ブツ, モツ もの, もの-
Say, Word ゲン, ゴン い.う, こと