Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
previous [ˈpriːvɪəs] adj предыду́щий#
I have a previous engagement э́то вре́мя у меня́ уже́ за́нято
previous to до +gen
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: