Declension table of ?vidhātavya

Neuter	Singular	Dual	Plural
Nominative	vidhātavyam	vidhātavye	vidhātavyāni
Vocative	vidhātavya	vidhātavye	vidhātavyāni
Accusative	vidhātavyam	vidhātavye	vidhātavyāni
Instrumental	vidhātavyena	vidhātavyābhyām	vidhātavyaiḥ
Dative	vidhātavyāya	vidhātavyābhyām	vidhātavyebhyaḥ
Ablative	vidhātavyāt	vidhātavyābhyām	vidhātavyebhyaḥ
Genitive	vidhātavyasya	vidhātavyayoḥ	vidhātavyānām
Locative	vidhātavye	vidhātavyayoḥ	vidhātavyeṣu

Compound vidhātavya -

Adverb -vidhātavyam -vidhātavyāt