Declension table of ?ṛtavat

Masculine	Singular	Dual	Plural
Nominative	ṛtavān	ṛtavantau	ṛtavantaḥ
Vocative	ṛtavan	ṛtavantau	ṛtavantaḥ
Accusative	ṛtavantam	ṛtavantau	ṛtavataḥ
Instrumental	ṛtavatā	ṛtavadbhyām	ṛtavadbhiḥ
Dative	ṛtavate	ṛtavadbhyām	ṛtavadbhyaḥ
Ablative	ṛtavataḥ	ṛtavadbhyām	ṛtavadbhyaḥ
Genitive	ṛtavataḥ	ṛtavatoḥ	ṛtavatām
Locative	ṛtavati	ṛtavatoḥ	ṛtavatsu

Compound ṛtavat -

Adverb -ṛtavantam