Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
delicious [dɪˈlɪʃəs] adj (food) о́чень вку́сный*вку́сен (smell, feeling, person) восхити́тельный*восхити́телен
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.