From un- + tainted.

• IPA: /ʌnˈteɪntɪd/

untainted

1. Not tainted; free of contamination; pure.
   • 1749, Henry Fielding, The History of Tom Jones, a Foundling, volume (please specify |volume=I to VI), London: A[ndrew] Millar, […], →OCLC ↗:

     The master of [the Bell public house] is brother to the great preacher Whitefield; but is absolutely untainted with the pernicious principles of Methodism, or of any other heretical sect.

   • 1877, W. S. Gilbert, The Sorcerer, Act I:

     Time was when Love and I were well acquainted.
     Time was when we walked ever hand in hand.
     A saintly youth, with worldly thought untainted,
     None better loved than I in all the land!