Declension table of ?dhūrvat

Masculine	Singular	Dual	Plural
Nominative	dhūrvān	dhūrvantau	dhūrvantaḥ
Vocative	dhūrvan	dhūrvantau	dhūrvantaḥ
Accusative	dhūrvantam	dhūrvantau	dhūrvataḥ
Instrumental	dhūrvatā	dhūrvadbhyām	dhūrvadbhiḥ
Dative	dhūrvate	dhūrvadbhyām	dhūrvadbhyaḥ
Ablative	dhūrvataḥ	dhūrvadbhyām	dhūrvadbhyaḥ
Genitive	dhūrvataḥ	dhūrvatoḥ	dhūrvatām
Locative	dhūrvati	dhūrvatoḥ	dhūrvatsu

Compound dhūrvat -

Adverb -dhūrvantam