Declension table of ?vretavya

Masculine	Singular	Dual	Plural
Nominative	vretavyaḥ	vretavyau	vretavyāḥ
Vocative	vretavya	vretavyau	vretavyāḥ
Accusative	vretavyam	vretavyau	vretavyān
Instrumental	vretavyena	vretavyābhyām	vretavyaiḥ vretavyebhiḥ
Dative	vretavyāya	vretavyābhyām	vretavyebhyaḥ
Ablative	vretavyāt	vretavyābhyām	vretavyebhyaḥ
Genitive	vretavyasya	vretavyayoḥ	vretavyānām
Locative	vretavye	vretavyayoḥ	vretavyeṣu

Compound vretavya -

Adverb -vretavyam -vretavyāt