Declension table of ?prahetavya

Masculine	Singular	Dual	Plural
Nominative	prahetavyaḥ	prahetavyau	prahetavyāḥ
Vocative	prahetavya	prahetavyau	prahetavyāḥ
Accusative	prahetavyam	prahetavyau	prahetavyān
Instrumental	prahetavyena	prahetavyābhyām	prahetavyaiḥ prahetavyebhiḥ
Dative	prahetavyāya	prahetavyābhyām	prahetavyebhyaḥ
Ablative	prahetavyāt	prahetavyābhyām	prahetavyebhyaḥ
Genitive	prahetavyasya	prahetavyayoḥ	prahetavyānām
Locative	prahetavye	prahetavyayoḥ	prahetavyeṣu

Compound prahetavya -

Adverb -prahetavyam -prahetavyāt