Declension table of ?viprasanna

Masculine	Singular	Dual	Plural
Nominative	viprasannaḥ	viprasannau	viprasannāḥ
Vocative	viprasanna	viprasannau	viprasannāḥ
Accusative	viprasannam	viprasannau	viprasannān
Instrumental	viprasannena	viprasannābhyām	viprasannaiḥ viprasannebhiḥ
Dative	viprasannāya	viprasannābhyām	viprasannebhyaḥ
Ablative	viprasannāt	viprasannābhyām	viprasannebhyaḥ
Genitive	viprasannasya	viprasannayoḥ	viprasannānām
Locative	viprasanne	viprasannayoḥ	viprasanneṣu

Compound viprasanna -

Adverb -viprasannam -viprasannāt