Declension table of ?ṛpthavat

Masculine	Singular	Dual	Plural
Nominative	ṛpthavān	ṛpthavantau	ṛpthavantaḥ
Vocative	ṛpthavan	ṛpthavantau	ṛpthavantaḥ
Accusative	ṛpthavantam	ṛpthavantau	ṛpthavataḥ
Instrumental	ṛpthavatā	ṛpthavadbhyām	ṛpthavadbhiḥ
Dative	ṛpthavate	ṛpthavadbhyām	ṛpthavadbhyaḥ
Ablative	ṛpthavataḥ	ṛpthavadbhyām	ṛpthavadbhyaḥ
Genitive	ṛpthavataḥ	ṛpthavatoḥ	ṛpthavatām
Locative	ṛpthavati	ṛpthavatoḥ	ṛpthavatsu

Compound ṛpthavat -

Adverb -ṛpthavantam