Declension table of ?prahetavya

Neuter	Singular	Dual	Plural
Nominative	prahetavyam	prahetavye	prahetavyāni
Vocative	prahetavya	prahetavye	prahetavyāni
Accusative	prahetavyam	prahetavye	prahetavyāni
Instrumental	prahetavyena	prahetavyābhyām	prahetavyaiḥ
Dative	prahetavyāya	prahetavyābhyām	prahetavyebhyaḥ
Ablative	prahetavyāt	prahetavyābhyām	prahetavyebhyaḥ
Genitive	prahetavyasya	prahetavyayoḥ	prahetavyānām
Locative	prahetavye	prahetavyayoḥ	prahetavyeṣu

Compound prahetavya -

Adverb -prahetavyam -prahetavyāt