Declension table of ?bhretavya

Masculine	Singular	Dual	Plural
Nominative	bhretavyaḥ	bhretavyau	bhretavyāḥ
Vocative	bhretavya	bhretavyau	bhretavyāḥ
Accusative	bhretavyam	bhretavyau	bhretavyān
Instrumental	bhretavyena	bhretavyābhyām	bhretavyaiḥ bhretavyebhiḥ
Dative	bhretavyāya	bhretavyābhyām	bhretavyebhyaḥ
Ablative	bhretavyāt	bhretavyābhyām	bhretavyebhyaḥ
Genitive	bhretavyasya	bhretavyayoḥ	bhretavyānām
Locative	bhretavye	bhretavyayoḥ	bhretavyeṣu

Compound bhretavya -

Adverb -bhretavyam -bhretavyāt