Declension table of ?ṛtavyavat

Masculine	Singular	Dual	Plural
Nominative	ṛtavyavān	ṛtavyavantau	ṛtavyavantaḥ
Vocative	ṛtavyavan	ṛtavyavantau	ṛtavyavantaḥ
Accusative	ṛtavyavantam	ṛtavyavantau	ṛtavyavataḥ
Instrumental	ṛtavyavatā	ṛtavyavadbhyām	ṛtavyavadbhiḥ
Dative	ṛtavyavate	ṛtavyavadbhyām	ṛtavyavadbhyaḥ
Ablative	ṛtavyavataḥ	ṛtavyavadbhyām	ṛtavyavadbhyaḥ
Genitive	ṛtavyavataḥ	ṛtavyavatoḥ	ṛtavyavatām
Locative	ṛtavyavati	ṛtavyavatoḥ	ṛtavyavatsu

Compound ṛtavyavat -

Adverb -ṛtavyavantam