Declension table of ?dātavat

Masculine	Singular	Dual	Plural
Nominative	dātavān	dātavantau	dātavantaḥ
Vocative	dātavan	dātavantau	dātavantaḥ
Accusative	dātavantam	dātavantau	dātavataḥ
Instrumental	dātavatā	dātavadbhyām	dātavadbhiḥ
Dative	dātavate	dātavadbhyām	dātavadbhyaḥ
Ablative	dātavataḥ	dātavadbhyām	dātavadbhyaḥ
Genitive	dātavataḥ	dātavatoḥ	dātavatām
Locative	dātavati	dātavatoḥ	dātavatsu

Compound dātavat -

Adverb -dātavantam