Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
innocuous [ɪˈnɔkjuəs] adj (substance) безвре́дный*безвре́ден (remarks) безоби́дный*безоби́ден
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: