Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
torment [n ˈtɔːmɛnt] [vt tɔːˈmɛnt] n муче́ние
vt му́чить*(impf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: