Declension table of ?nayitavya

Neuter	Singular	Dual	Plural
Nominative	nayitavyam	nayitavye	nayitavyāni
Vocative	nayitavya	nayitavye	nayitavyāni
Accusative	nayitavyam	nayitavye	nayitavyāni
Instrumental	nayitavyena	nayitavyābhyām	nayitavyaiḥ
Dative	nayitavyāya	nayitavyābhyām	nayitavyebhyaḥ
Ablative	nayitavyāt	nayitavyābhyām	nayitavyebhyaḥ
Genitive	nayitavyasya	nayitavyayoḥ	nayitavyānām
Locative	nayitavye	nayitavyayoḥ	nayitavyeṣu

Compound nayitavya -

Adverb -nayitavyam -nayitavyāt