JMdict: 2839021

油断ならない 【ゆだんならない】

  1. [exp,adj-i] treacherous; dangerous; untrustworthy; sneaky; cunning
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
油 Oil, Fat ユ, ユウ あぶら
断 Severance, Decline, Refuse, Apologize, Warn, Dismiss, Prohibit, Decision, Judgement, Cutting ダン た.つ, ことわ.る, さだ.める