Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
tainted [ˈteɪntɪd] adj (food) испо́рченный; (air, water) загрязнённый*загрязнён (fig) запя́тнанный
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
taint [teɪnt]
vt (meat, food) по́ртить*(испо́ртить*perf)
(fig) пятна́ть (запятна́ть perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.