Declension table of ?vretavya

Neuter	Singular	Dual	Plural
Nominative	vretavyam	vretavye	vretavyāni
Vocative	vretavya	vretavye	vretavyāni
Accusative	vretavyam	vretavye	vretavyāni
Instrumental	vretavyena	vretavyābhyām	vretavyaiḥ
Dative	vretavyāya	vretavyābhyām	vretavyebhyaḥ
Ablative	vretavyāt	vretavyābhyām	vretavyebhyaḥ
Genitive	vretavyasya	vretavyayoḥ	vretavyānām
Locative	vretavye	vretavyayoḥ	vretavyeṣu

Compound vretavya -

Adverb -vretavyam -vretavyāt