Declension table of ?manitavya

Neuter	Singular	Dual	Plural
Nominative	manitavyam	manitavye	manitavyāni
Vocative	manitavya	manitavye	manitavyāni
Accusative	manitavyam	manitavye	manitavyāni
Instrumental	manitavyena	manitavyābhyām	manitavyaiḥ
Dative	manitavyāya	manitavyābhyām	manitavyebhyaḥ
Ablative	manitavyāt	manitavyābhyām	manitavyebhyaḥ
Genitive	manitavyasya	manitavyayoḥ	manitavyānām
Locative	manitavye	manitavyayoḥ	manitavyeṣu

Compound manitavya -

Adverb -manitavyam -manitavyāt