JMdict: 1538700

油断大敵 【ゆだんたいてき】

  1. [exp] don't let your guard down; carelessness is the great enemy; danger comes soonest when it is despised
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Oil, Fat ユ, ユウ あぶら
Severance, Decline, Refuse, Apologize, Warn, Dismiss, Prohibit, Decision, Judgement, Cutting ダン た.つ, ことわ.る, さだ.める
Large, Big ダイ, タイ おお-, おお.きい, -おお.いに
Enemy, Foe, Opponent テキ かたき, あだ, かな.う