Declension table of ?gahanavat

Masculine	Singular	Dual	Plural
Nominative	gahanavān	gahanavantau	gahanavantaḥ
Vocative	gahanavan	gahanavantau	gahanavantaḥ
Accusative	gahanavantam	gahanavantau	gahanavataḥ
Instrumental	gahanavatā	gahanavadbhyām	gahanavadbhiḥ
Dative	gahanavate	gahanavadbhyām	gahanavadbhyaḥ
Ablative	gahanavataḥ	gahanavadbhyām	gahanavadbhyaḥ
Genitive	gahanavataḥ	gahanavatoḥ	gahanavatām
Locative	gahanavati	gahanavatoḥ	gahanavatsu

Compound gahanavat -

Adverb -gahanavantam