stainless

Without stain or blemish.

Resistant to stain or corrosion.

Made of a stainless material.

Free from spot or stain, whether physical or moral; unblemished; immaculate; untarnished: literally or figuratively.

Free from stain; immaculate.

Describing an alloy that is resistant to corrosion and discoloration.

Unmarked, spotless.

Short for stainless steel.

(of reputation) free from blemishes

steel containing chromium that makes it resistant to corrosion