Declension table of ?vṛtavat

Masculine	Singular	Dual	Plural
Nominative	vṛtavān	vṛtavantau	vṛtavantaḥ
Vocative	vṛtavan	vṛtavantau	vṛtavantaḥ
Accusative	vṛtavantam	vṛtavantau	vṛtavataḥ
Instrumental	vṛtavatā	vṛtavadbhyām	vṛtavadbhiḥ
Dative	vṛtavate	vṛtavadbhyām	vṛtavadbhyaḥ
Ablative	vṛtavataḥ	vṛtavadbhyām	vṛtavadbhyaḥ
Genitive	vṛtavataḥ	vṛtavatoḥ	vṛtavatām
Locative	vṛtavati	vṛtavatoḥ	vṛtavatsu

Compound vṛtavat -

Adverb -vṛtavantam