Declension table of ?nāśayitavya

Neuter	Singular	Dual	Plural
Nominative	nāśayitavyam	nāśayitavye	nāśayitavyāni
Vocative	nāśayitavya	nāśayitavye	nāśayitavyāni
Accusative	nāśayitavyam	nāśayitavye	nāśayitavyāni
Instrumental	nāśayitavyena	nāśayitavyābhyām	nāśayitavyaiḥ
Dative	nāśayitavyāya	nāśayitavyābhyām	nāśayitavyebhyaḥ
Ablative	nāśayitavyāt	nāśayitavyābhyām	nāśayitavyebhyaḥ
Genitive	nāśayitavyasya	nāśayitavyayoḥ	nāśayitavyānām
Locative	nāśayitavye	nāśayitavyayoḥ	nāśayitavyeṣu

Compound nāśayitavya -

Adverb -nāśayitavyam -nāśayitavyāt