Qué es taint? Qué es taint? To affect with or as if with a disease.To affect with decay or putrefaction; spoil. See Synonyms at contaminate.To corrupt morally. To affect with a tinge of something reprehensible.To become affected with decay or putrefaction; spoil.A moral defect considered as a stain or spot. See Synonyms at stain.An infecting touch, influence, or tinge.