Declension table of ?pratipattavya

Neuter	Singular	Dual	Plural
Nominative	pratipattavyam	pratipattavye	pratipattavyāni
Vocative	pratipattavya	pratipattavye	pratipattavyāni
Accusative	pratipattavyam	pratipattavye	pratipattavyāni
Instrumental	pratipattavyena	pratipattavyābhyām	pratipattavyaiḥ
Dative	pratipattavyāya	pratipattavyābhyām	pratipattavyebhyaḥ
Ablative	pratipattavyāt	pratipattavyābhyām	pratipattavyebhyaḥ
Genitive	pratipattavyasya	pratipattavyayoḥ	pratipattavyānām
Locative	pratipattavye	pratipattavyayoḥ	pratipattavyeṣu

Compound pratipattavya -

Adverb -pratipattavyam -pratipattavyāt