Declension table of ?kagitavya

Masculine	Singular	Dual	Plural
Nominative	kagitavyaḥ	kagitavyau	kagitavyāḥ
Vocative	kagitavya	kagitavyau	kagitavyāḥ
Accusative	kagitavyam	kagitavyau	kagitavyān
Instrumental	kagitavyena	kagitavyābhyām	kagitavyaiḥ kagitavyebhiḥ
Dative	kagitavyāya	kagitavyābhyām	kagitavyebhyaḥ
Ablative	kagitavyāt	kagitavyābhyām	kagitavyebhyaḥ
Genitive	kagitavyasya	kagitavyayoḥ	kagitavyānām
Locative	kagitavye	kagitavyayoḥ	kagitavyeṣu

Compound kagitavya -

Adverb -kagitavyam -kagitavyāt