Declension table of ?vipavya

Neuter	Singular	Dual	Plural
Nominative	vipavyam	vipavye	vipavyāni
Vocative	vipavya	vipavye	vipavyāni
Accusative	vipavyam	vipavye	vipavyāni
Instrumental	vipavyena	vipavyābhyām	vipavyaiḥ
Dative	vipavyāya	vipavyābhyām	vipavyebhyaḥ
Ablative	vipavyāt	vipavyābhyām	vipavyebhyaḥ
Genitive	vipavyasya	vipavyayoḥ	vipavyānām
Locative	vipavye	vipavyayoḥ	vipavyeṣu

Compound vipavya -

Adverb -vipavyam -vipavyāt