Similar word to untainted:

above suspicion, angelic, angelical, chaste, clean, cleanhanded, clear, crimeless, exemplary, faultless, free of, good, guilt-free, guiltless, honest, immaculate, impeccable, impeccant, in the clear, inculpable, irreproachable, lawful, legal, legitimate, licit, lily-white, not guilty, pristine, pure, pure as the driven snow, righteous, safe, sinless, spotless, stainless, unblemished, uncensurable, uncorrupt, uncorrupted, undefiled, unimpeachable, uninvolved, unoffending, unstained, unsullied, upright, virginal, virtuous