Declension table of ?kadarthayitavya

Masculine	Singular	Dual	Plural
Nominative	kadarthayitavyaḥ	kadarthayitavyau	kadarthayitavyāḥ
Vocative	kadarthayitavya	kadarthayitavyau	kadarthayitavyāḥ
Accusative	kadarthayitavyam	kadarthayitavyau	kadarthayitavyān
Instrumental	kadarthayitavyena	kadarthayitavyābhyām	kadarthayitavyaiḥ kadarthayitavyebhiḥ
Dative	kadarthayitavyāya	kadarthayitavyābhyām	kadarthayitavyebhyaḥ
Ablative	kadarthayitavyāt	kadarthayitavyābhyām	kadarthayitavyebhyaḥ
Genitive	kadarthayitavyasya	kadarthayitavyayoḥ	kadarthayitavyānām
Locative	kadarthayitavye	kadarthayitavyayoḥ	kadarthayitavyeṣu

Compound kadarthayitavya -

Adverb -kadarthayitavyam -kadarthayitavyāt