Declension table of ?jñātavya

Neuter	Singular	Dual	Plural
Nominative	jñātavyam	jñātavye	jñātavyāni
Vocative	jñātavya	jñātavye	jñātavyāni
Accusative	jñātavyam	jñātavye	jñātavyāni
Instrumental	jñātavyena	jñātavyābhyām	jñātavyaiḥ
Dative	jñātavyāya	jñātavyābhyām	jñātavyebhyaḥ
Ablative	jñātavyāt	jñātavyābhyām	jñātavyebhyaḥ
Genitive	jñātavyasya	jñātavyayoḥ	jñātavyānām
Locative	jñātavye	jñātavyayoḥ	jñātavyeṣu

Compound jñātavya -

Adverb -jñātavyam -jñātavyāt