idiot savant
nounNAmE//ˌɪdiət sæˈvɑnt//, NAmE//ˌɪdiətsəˈvɑnt//
(pl. idiot savants or idiots savants NAmE//ˌɪdiət sæˈvɑnt//, NAmE//ˌɪdiətsəˈvɑnt//
) (from French)Check pronunciation: idiot savant
Definition of idiot savant noun from the Oxford Advanced American Dictionary