stainless
/ˈsteɪnleɪs/Definitions
1. adjective
Not liable to become stained or tainted
“The stainless steel sink was easy to clean.”
2. noun
A type of steel alloy that does not stain, corrode, or tarnish
“The stainless steel knives were durable and resistant to rust.”
3. adverb
In a manner that is resistant to staining or tainting
“She cooked the meal stainless, without adding any extra flavorings.”