“滴水不漏”，汉语成语，字面意思是一滴水也不泄漏（make sure that not a single drop leaks out）。形容说话、办事等十分周密谨慎，毫无破绽。可以翻译为“flawless，without a trace或leave no room for criticism”等。

例句：

他防守的时候几乎滴水不漏，进攻也很出色。

He hardly put a foot wrong in defence and was fine in attack.