油ゆ断だん大たい敵てきMeaningsExpression1. don't let your guard down; carelessness is the great enemy; danger comes soonest when it is despised (Yojijukugo)Kanji used油oil断be cut off大large敵enemyPitch accentゆだんたいてきComposed of油ゆ断だんnegligence; carelessness; inattention; unpreparednessNoun大たい敵てきgreat rival; powerful enemy; archenemyNounExamples1油ゆ断だん大たい敵てき。Security is the greatest enemy.