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old term for a person with an intermediate grade of mental retardation, now considered offensive.
An obsolete term for a subclass of mental retardation or an individual classified therein.
[L. imbecillus, weak, silly]
1. A person who is considered foolish or stupid.
2. A person with moderate to severe intellectual disability having a mental age of from three to seven years and generally being capable of some degree of communication and performance of simple tasks under supervision. The term belongs to a classification system no longer in use and is now considered offensive.
im′be·cil′ic (-sĭl′ĭk) adv.
An obsolete term for a person with an intellectual disability above that of an idiot, which is now subdivided into either moderate (IQ 35–49) or severe (IQ 20–34) mental retardation.
A derogatory term used indiscriminately for an obtuse person, regardless of that person’s tested IQ.