अत्यर्थम्atyarthamind. excessively, exceedingly.
indeclinable excessively, exceedingly.
प्रियो हि ज्ञानिनोऽत्यर्थमहं स च मम प्रियः ॥
कोशःDictionaries
Apte, Monier-Williams and Macdonell at once. Type in any of fifteen scripts and schemes; the word is converted and looked up wherever it is part of a headword.