Declension table of ?prajñātavya

Neuter	Singular	Dual	Plural
Nominative	prajñātavyam	prajñātavye	prajñātavyāni
Vocative	prajñātavya	prajñātavye	prajñātavyāni
Accusative	prajñātavyam	prajñātavye	prajñātavyāni
Instrumental	prajñātavyena	prajñātavyābhyām	prajñātavyaiḥ
Dative	prajñātavyāya	prajñātavyābhyām	prajñātavyebhyaḥ
Ablative	prajñātavyāt	prajñātavyābhyām	prajñātavyebhyaḥ
Genitive	prajñātavyasya	prajñātavyayoḥ	prajñātavyānām
Locative	prajñātavye	prajñātavyayoḥ	prajñātavyeṣu

Compound prajñātavya -

Adverb -prajñātavyam -prajñātavyāt