Declension table of ?paurṇima

Masculine	Singular	Dual	Plural
Nominative	paurṇimaḥ	paurṇimau	paurṇimāḥ
Vocative	paurṇima	paurṇimau	paurṇimāḥ
Accusative	paurṇimam	paurṇimau	paurṇimān
Instrumental	paurṇimena	paurṇimābhyām	paurṇimaiḥ paurṇimebhiḥ
Dative	paurṇimāya	paurṇimābhyām	paurṇimebhyaḥ
Ablative	paurṇimāt	paurṇimābhyām	paurṇimebhyaḥ
Genitive	paurṇimasya	paurṇimayoḥ	paurṇimānām
Locative	paurṇime	paurṇimayoḥ	paurṇimeṣu

Compound paurṇima -

Adverb -paurṇimam -paurṇimāt