Declension table of ?vipavana

Masculine	Singular	Dual	Plural
Nominative	vipavanaḥ	vipavanau	vipavanāḥ
Vocative	vipavana	vipavanau	vipavanāḥ
Accusative	vipavanam	vipavanau	vipavanān
Instrumental	vipavanena	vipavanābhyām	vipavanaiḥ vipavanebhiḥ
Dative	vipavanāya	vipavanābhyām	vipavanebhyaḥ
Ablative	vipavanāt	vipavanābhyām	vipavanebhyaḥ
Genitive	vipavanasya	vipavanayoḥ	vipavanānām
Locative	vipavane	vipavanayoḥ	vipavaneṣu

Compound vipavana -

Adverb -vipavanam -vipavanāt