श्रद्धातव्यśraddhātavyan. (impers.) it should be believed MBh.
neuter gender (impersonal or used impersonally) it should be believed MBh.
कोशःDictionaries
Every entry for a word in Apte, Monier-Williams, Macdonell and the Dhātupāṭha, with their abbreviations spelled out, and an analysis of its forms.