Shirabe
油断 も 隙 も ない

油断ゆだん

Common Noun Irregular Intransitive
English jmdict
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verb negligence;carelessness;inattention;unpreparedness
私は油断していたことに気づいた。
I realized I was off my guard.
English jmdict
1
expressions (phrases one must constantly be on one's guard with ...;one cannot be too careful of ...
Other forms 油断も隙も無い 【ゆだんもすきもない】