ˈstānlə̇s adjective
1. : free from stain, spot, blemish, or stigma : immaculate
the stainless purity of her private life — T.B.Macaulay
a sea captain of stainless reputation — Llewellyn Howland
2.
a. : highly resistant to stain, corrosion, or tarnish
stainless iron
stainless silver
b. : made principally of such a highly resistant material
stainless flatware
stainless sills