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old term for profound mental retardation, now considered offensive.
idiot savant a person who is generally mentally retarded, yet has a particular mental faculty developed to an unusually high degree, such as for mathematics or music.
A person with profound intellectual disability having a mental age below three years and generally unable to learn connected speech or guard against common dangers. The term belongs to a classification system no longer in use and is now considered offensive.
An obsolete term formerly used for an individual with profound mental retardation (IQ < 20).
A derogatory term used indiscriminately for an obtuse person, regardless of that person’s tested IQ.