Declension table of ?kagitavya

Neuter	Singular	Dual	Plural
Nominative	kagitavyam	kagitavye	kagitavyāni
Vocative	kagitavya	kagitavye	kagitavyāni
Accusative	kagitavyam	kagitavye	kagitavyāni
Instrumental	kagitavyena	kagitavyābhyām	kagitavyaiḥ
Dative	kagitavyāya	kagitavyābhyām	kagitavyebhyaḥ
Ablative	kagitavyāt	kagitavyābhyām	kagitavyebhyaḥ
Genitive	kagitavyasya	kagitavyayoḥ	kagitavyānām
Locative	kagitavye	kagitavyayoḥ	kagitavyeṣu

Compound kagitavya -

Adverb -kagitavyam -kagitavyāt