stainless
Not capable of being stained or rusted.
Adjective
This term carries a strong association with purity, sterility, and permanence. In a literal sense, it describes materials that resist corrosion and discoloration, evoking an image of a clinical, mirrored, or high-tech surface that remains pristine regardless of use.
When applied to a person's character or reputation, it suggests an absolute lack of flaw or moral corruption. It implies a state of being untouched by scandal or sin, creating a feeling of untouchable integrity that is far more absolute than simply being honest or good.