Declension table of ?nidhātavya

Neuter	Singular	Dual	Plural
Nominative	nidhātavyam	nidhātavye	nidhātavyāni
Vocative	nidhātavya	nidhātavye	nidhātavyāni
Accusative	nidhātavyam	nidhātavye	nidhātavyāni
Instrumental	nidhātavyena	nidhātavyābhyām	nidhātavyaiḥ
Dative	nidhātavyāya	nidhātavyābhyām	nidhātavyebhyaḥ
Ablative	nidhātavyāt	nidhātavyābhyām	nidhātavyebhyaḥ
Genitive	nidhātavyasya	nidhātavyayoḥ	nidhātavyānām
Locative	nidhātavye	nidhātavyayoḥ	nidhātavyeṣu

Compound nidhātavya -

Adverb -nidhātavyam -nidhātavyāt