Entry 1 sense Webster, 1913 Stainless · Stain·less · IPA /stˈeɪnləs/ 01 a. Free from stain; immaculate. 1. Free from stain; immaculate. “The very care he took to keep his name Stainless, with some was evidence of shame.” — Crabbe. Syn. Blameless; spotless; faultless. See Blameless.