Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
lofty [ˈlɔftɪ] adj (high) высо́кий*высо́к (noble) возвы́шенный/возвы́шен (self-important) высокоме́рный*высокоме́рен
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: