Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
really [ˈrɪəlɪ] adv (very) о́чень; (actually)
what really happened? что произошло́ на са́мом де́ле?
really? (indicating interest) пра́вда?, да? (expressing surprise) неуже́ли?, серьёзно?
really! (indicating annoyance) ну, зна́ете!
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: