Declension table of ?nīvya

Masculine	Singular	Dual	Plural
Nominative	nīvyaḥ	nīvyau	nīvyāḥ
Vocative	nīvya	nīvyau	nīvyāḥ
Accusative	nīvyam	nīvyau	nīvyān
Instrumental	nīvyena	nīvyābhyām	nīvyaiḥ nīvyebhiḥ
Dative	nīvyāya	nīvyābhyām	nīvyebhyaḥ
Ablative	nīvyāt	nīvyābhyām	nīvyebhyaḥ
Genitive	nīvyasya	nīvyayoḥ	nīvyānām
Locative	nīvye	nīvyayoḥ	nīvyeṣu

Compound nīvya -

Adverb -nīvyam -nīvyāt