殺ころしても死しなない

expression

couldn't kill (someone) if you tried; tough as nails

A hyperbolic set phrase meaning someone is so tough or resilient that even an attempt to kill them would fail. Often used figuratively about a person's tenacity or indestructible nature.

• あの人ひとは殺ころしても死しなないタイプだ。

  That person is the type you couldn't kill if you tried.

• 殺ころしても死しなないような強つよさを持もっている。

  He has a toughness as if you couldn't kill him if you tried.