stainless

From stain +‎ -less.

stainless (not comparable)

1. Describing an alloy that is resistant to corrosion and discoloration.
   • 2024 January 26, Madeline Holcombe and Sandee LaMotte, “Stanley and other drink cups contain lead. Should you be worried?”, in CNN‎^[1]:

     Lead is used as part of the tumbler’s vacuum insulation and is covered by a stainless steel layer that protects consumers from lead exposure, according to the Stanley cup manufacturer, Pacific Market International.

2. Unmarked, spotless.
3. Free from sin; morally pure.
   • 1961, Norma Lorre Goodrich, “Beowulf”, in The Medieval Myths, New York: The New American Library, page 28:

     After that there were boastings in Hereot! Then did the warriors brag before their stainless queen.

• (resistant to corrosion): rustproof

stainless (usually uncountable, plural stainlesses)

2. Ellipsis of stainless steel.

   The conveyors are made entirely of stainless and the whole facility is designed for regular washdowns.

• saintless, saltiness, slatiness