Declension table of ?nādayitavya

Neuter	Singular	Dual	Plural
Nominative	nādayitavyam	nādayitavye	nādayitavyāni
Vocative	nādayitavya	nādayitavye	nādayitavyāni
Accusative	nādayitavyam	nādayitavye	nādayitavyāni
Instrumental	nādayitavyena	nādayitavyābhyām	nādayitavyaiḥ
Dative	nādayitavyāya	nādayitavyābhyām	nādayitavyebhyaḥ
Ablative	nādayitavyāt	nādayitavyābhyām	nādayitavyebhyaḥ
Genitive	nādayitavyasya	nādayitavyayoḥ	nādayitavyānām
Locative	nādayitavye	nādayitavyayoḥ	nādayitavyeṣu

Compound nādayitavya -

Adverb -nādayitavyam -nādayitavyāt