सुनिष्ठितsuniṣṭhitamfn. (cf. -निःष्ठ्˚) well versed in or acquainted with (loc.) ib.
masculine, feminine and neuter; or adjective (confer, compare -निःष्ठ्that the rest of a word is to be supplied) well versed in or acquainted with (locative case) ibidem