Declension table of ?pūrṇavapus

Masculine	Singular	Dual	Plural
Nominative	pūrṇavapuḥ	pūrṇavapuṣau	pūrṇavapuṣaḥ
Vocative	pūrṇavapuḥ	pūrṇavapuṣau	pūrṇavapuṣaḥ
Accusative	pūrṇavapuṣam	pūrṇavapuṣau	pūrṇavapuṣaḥ
Instrumental	pūrṇavapuṣā	pūrṇavapurbhyām	pūrṇavapurbhiḥ
Dative	pūrṇavapuṣe	pūrṇavapurbhyām	pūrṇavapurbhyaḥ
Ablative	pūrṇavapuṣaḥ	pūrṇavapurbhyām	pūrṇavapurbhyaḥ
Genitive	pūrṇavapuṣaḥ	pūrṇavapuṣoḥ	pūrṇavapuṣām
Locative	pūrṇavapuṣi	pūrṇavapuṣoḥ	pūrṇavapuḥṣu

Compound pūrṇavapus -

Adverb -pūrṇavapus