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Mental defectiveness has 10 synonyms. The top synonyms for mental defectiveness are retardation, insanity, imbecility, idiocy, mongolism, infantilism, amentia, simplicity and 2 more. Another word for mental defectiveness is retardation. Browse the full list below.
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| Random | DefinitionA common synonym for mental defectiveness is retardation. Other synonyms include insanity, imbecility, idiocy, mongolism.
Mental defectiveness has 10 synonyms listed on Thesaurasize.
(n): retardation sufficient to fall outside the normal range of intelligence
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