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Synonyms

mental deficiency

British  

noun

  1. psychiatry a less common term for mental retardation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

One brother died young of kidney failure after suffering from blindness, obesity, hypogonadism and mental deficiency; the other suffered longer after kidney dialysis machines became available.

From Washington Post • Jun. 28, 2022

But Dr. Pike doesn’t think a lack of animal imagery marks a mental deficiency in Neanderthals.

From New York Times • Feb. 22, 2018

Things became difficult at home and after getting into trouble with the police, she was given probation and sent to Aston Hall, a "mental deficiency hospital" treating adults and children.

From BBC • Jul. 18, 2016

People who knew her said that they never noticed any signs of mental deficiency.

From The New Yorker • Apr. 27, 2016

In all such cases, with rare exceptions to be mentioned immediately, by the time the mental deficiency is discovered, its causes are no longer active, and consequently cannot be affected by medical intervention.

From Mentally Defective Children by Binet, Alfred