idiot savant

idiot sa·vant

noun
\ˈē-ˌdyō-sä-ˈväⁿ; ˈid-ē-ət-sə-ˈvänt, -ˈvant\

plural idiots savants \-ˌdyō-sä-ˈväⁿ(z); -əts-sə-ˈvänt(s), -ˈvant(s)\ or idiot savants

Definition of IDIOT SAVANT

: a person affected with a mental disability (as autism or mental retardation) who exhibits exceptional skill or brilliance in some limited field (as mathematics or music)—called also savant