JMdict: 2107780

盗人猛猛しい 【ぬすっとたけだけしい】

  1. [exp,adj-i] brazen-faced (about one's misdeed); audacious (despite being in the wrong); shameless; impudent
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Steal, Rob, Pilfer トウ ぬす.む, ぬす.み
Person ジン, ニン ひと, -り, -と 1
Fierce, Rave, Rush, Become Furious, Wildness, Strength モウ