Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
shadowy [ˈʃædəuɪ] adj (place) тени́стый/тени́ст (figure, shape) сму́тный*сму́тен
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: