Declension table of ?rīvitavya

Neuter	Singular	Dual	Plural
Nominative	rīvitavyam	rīvitavye	rīvitavyāni
Vocative	rīvitavya	rīvitavye	rīvitavyāni
Accusative	rīvitavyam	rīvitavye	rīvitavyāni
Instrumental	rīvitavyena	rīvitavyābhyām	rīvitavyaiḥ
Dative	rīvitavyāya	rīvitavyābhyām	rīvitavyebhyaḥ
Ablative	rīvitavyāt	rīvitavyābhyām	rīvitavyebhyaḥ
Genitive	rīvitavyasya	rīvitavyayoḥ	rīvitavyānām
Locative	rīvitavye	rīvitavyayoḥ	rīvitavyeṣu

Compound rīvitavya -

Adverb -rīvitavyam -rīvitavyāt