stainless adjective 3noun 1forms 1 adjective3 •Unmarked, spotless. •Describing an alloy that is resistant to corrosion and discoloration. •Free from sin; morally pure.After that there were boastings in Hereot! Then did the warriors brag before their stainless queen. — 1961 noun1 •Ellipsis of stainless steel.The conveyors are made entirely of stainless and the whole facility is designed for regular washdowns. formsstainlesses