अत्यन्तम्atyantamind. excessively, exceedingly, in perpetuity, absolutely, completely
indeclinable excessively, exceedingly, in perpetuity, absolutely, completely
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.