Declension table of ?riṇvitavya

Neuter	Singular	Dual	Plural
Nominative	riṇvitavyam	riṇvitavye	riṇvitavyāni
Vocative	riṇvitavya	riṇvitavye	riṇvitavyāni
Accusative	riṇvitavyam	riṇvitavye	riṇvitavyāni
Instrumental	riṇvitavyena	riṇvitavyābhyām	riṇvitavyaiḥ
Dative	riṇvitavyāya	riṇvitavyābhyām	riṇvitavyebhyaḥ
Ablative	riṇvitavyāt	riṇvitavyābhyām	riṇvitavyebhyaḥ
Genitive	riṇvitavyasya	riṇvitavyayoḥ	riṇvitavyānām
Locative	riṇvitavye	riṇvitavyayoḥ	riṇvitavyeṣu

Compound riṇvitavya -

Adverb -riṇvitavyam -riṇvitavyāt