Declension table of ?sphaltavat

Masculine	Singular	Dual	Plural
Nominative	sphaltavān	sphaltavantau	sphaltavantaḥ
Vocative	sphaltavan	sphaltavantau	sphaltavantaḥ
Accusative	sphaltavantam	sphaltavantau	sphaltavataḥ
Instrumental	sphaltavatā	sphaltavadbhyām	sphaltavadbhiḥ
Dative	sphaltavate	sphaltavadbhyām	sphaltavadbhyaḥ
Ablative	sphaltavataḥ	sphaltavadbhyām	sphaltavadbhyaḥ
Genitive	sphaltavataḥ	sphaltavatoḥ	sphaltavatām
Locative	sphaltavati	sphaltavatoḥ	sphaltavatsu

Compound sphaltavat -

Adverb -sphaltavantam