Declension table of ?vidvan

Neuter	Singular	Dual	Plural
Nominative	vidva	vidvnī vidvanī	vidvāni
Vocative	vidvan vidva	vidvnī vidvanī	vidvāni
Accusative	vidva	vidvnī vidvanī	vidvāni
Instrumental	vidvanā	vidvabhyām	vidvabhiḥ
Dative	vidvane	vidvabhyām	vidvabhyaḥ
Ablative	vidvanaḥ	vidvabhyām	vidvabhyaḥ
Genitive	vidvanaḥ	vidvanoḥ	vidvanām
Locative	vidvani	vidvanoḥ	vidvasu

Compound vidva -

Adverb -vidva -vidvam