Declension table of ?dūnavat

Masculine	Singular	Dual	Plural
Nominative	dūnavān	dūnavantau	dūnavantaḥ
Vocative	dūnavan	dūnavantau	dūnavantaḥ
Accusative	dūnavantam	dūnavantau	dūnavataḥ
Instrumental	dūnavatā	dūnavadbhyām	dūnavadbhiḥ
Dative	dūnavate	dūnavadbhyām	dūnavadbhyaḥ
Ablative	dūnavataḥ	dūnavadbhyām	dūnavadbhyaḥ
Genitive	dūnavataḥ	dūnavatoḥ	dūnavatām
Locative	dūnavati	dūnavatoḥ	dūnavatsu

Compound dūnavat -

Adverb -dūnavantam