Declension table of ?marṇitavya

Neuter	Singular	Dual	Plural
Nominative	marṇitavyam	marṇitavye	marṇitavyāni
Vocative	marṇitavya	marṇitavye	marṇitavyāni
Accusative	marṇitavyam	marṇitavye	marṇitavyāni
Instrumental	marṇitavyena	marṇitavyābhyām	marṇitavyaiḥ
Dative	marṇitavyāya	marṇitavyābhyām	marṇitavyebhyaḥ
Ablative	marṇitavyāt	marṇitavyābhyām	marṇitavyebhyaḥ
Genitive	marṇitavyasya	marṇitavyayoḥ	marṇitavyānām
Locative	marṇitavye	marṇitavyayoḥ	marṇitavyeṣu

Compound marṇitavya -

Adverb -marṇitavyam -marṇitavyāt