Declension table of ?pūrṇavat

Masculine	Singular	Dual	Plural
Nominative	pūrṇavān	pūrṇavantau	pūrṇavantaḥ
Vocative	pūrṇavan	pūrṇavantau	pūrṇavantaḥ
Accusative	pūrṇavantam	pūrṇavantau	pūrṇavataḥ
Instrumental	pūrṇavatā	pūrṇavadbhyām	pūrṇavadbhiḥ
Dative	pūrṇavate	pūrṇavadbhyām	pūrṇavadbhyaḥ
Ablative	pūrṇavataḥ	pūrṇavadbhyām	pūrṇavadbhyaḥ
Genitive	pūrṇavataḥ	pūrṇavatoḥ	pūrṇavatām
Locative	pūrṇavati	pūrṇavatoḥ	pūrṇavatsu

Compound pūrṇavat -

Adverb -pūrṇavantam