Declension table of ?dartavya

Masculine	Singular	Dual	Plural
Nominative	dartavyaḥ	dartavyau	dartavyāḥ
Vocative	dartavya	dartavyau	dartavyāḥ
Accusative	dartavyam	dartavyau	dartavyān
Instrumental	dartavyena	dartavyābhyām	dartavyaiḥ dartavyebhiḥ
Dative	dartavyāya	dartavyābhyām	dartavyebhyaḥ
Ablative	dartavyāt	dartavyābhyām	dartavyebhyaḥ
Genitive	dartavyasya	dartavyayoḥ	dartavyānām
Locative	dartavye	dartavyayoḥ	dartavyeṣu

Compound dartavya -

Adverb -dartavyam -dartavyāt