The word "untarnished" refers to something that is pure, unspoiled or undamaged. Its antonyms are words that describe things that are impure, spoiled or damaged. Some antonyms for "untarnished" are tarnished, stained, damaged, corrupted, compromised, blemished, defiled, poisoned, tainted, marred, sullied, and flawed. These words imply that something has lost its original state of purity, beauty or goodness. For instance, a tarnished silverware is no longer shiny or lustrous; it has lost its elegance and value. Similarly, a person's reputation can become tarnished if they are caught doing something dishonest or unethical. In contrast, an untarnished reputation suggests honesty, good character and integrity.