[ uhn-stey-nuh-buh l ]
/ ʌnˈsteɪ nə bəl /


that cannot be spotted or stained, as garments.
that cannot be morally reprehensible: an unstainable person.

Origin of unstainable

1575–85; un-1 + stainable
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unstainable

  • It was said to be untarnishable and unstainable even when used with the strongest acid foods, as well as non-rusting.

  • For some time the manufacturer triumphed, and it became known that Hart's red 'Angel-backs' were unstainable.

    Sharps and Flats|John Nevil Maskelyne