1) Adulterated 2) Besmirched 3) Containing pollutants 4) Corrupt 5) Corrupted 6) DC Comics one-shot 7) Degraded 8) Despoiled 9) Dirtied 10) Dishonoured 11) Fouled 12) Infected 13) No longer pure 14) Not completely clean 15) Not pure 16) Polluted 17) Pure no more 18) Rotten 19) Ruined 20) Soiled 21) Spoiled Found on https://www.crosswordclues.com/clue/tainted