Declension table of ?riṇvya

Masculine	Singular	Dual	Plural
Nominative	riṇvyaḥ	riṇvyau	riṇvyāḥ
Vocative	riṇvya	riṇvyau	riṇvyāḥ
Accusative	riṇvyam	riṇvyau	riṇvyān
Instrumental	riṇvyena	riṇvyābhyām	riṇvyaiḥ riṇvyebhiḥ
Dative	riṇvyāya	riṇvyābhyām	riṇvyebhyaḥ
Ablative	riṇvyāt	riṇvyābhyām	riṇvyebhyaḥ
Genitive	riṇvyasya	riṇvyayoḥ	riṇvyānām
Locative	riṇvye	riṇvyayoḥ	riṇvyeṣu

Compound riṇvya -

Adverb -riṇvyam -riṇvyāt