[ ri-tahr-did ]
/ rɪˈtɑr dɪd /
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simple past tense of retard.
Older Use: Usually Offensive. characterized by a slowness or limitation in intellectual understanding and awareness, emotional development, academic progress, etc.
Slang: Disparaging and Offensive. stupid or foolish: What a retarded thing to say!
noun (used with a plural verb)
Usually the retarded .Older Use: Offensive. people who are slow or limited in mental development: new schools for the retarded.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
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Origin of retarded

First recorded in 1800–10; retard + -ed2

usage note for retarded

In reference to low intellectual ability, the terms retarded, retardation, and mental retardation are now usually perceived as insulting and have largely been replaced by other terms. There are several acceptable alternatives. In general, someone with a mental, physical, or emotional disability may be described as developmentally disabled, or as a person with a developmental disability. If it is specifically a mental disability, the person may be described as cognitively impaired or intellectually disabled. Such a person may be referred to as an individual with a cognitive impairment or a person with an intellectual disability. The slang term retard is a term of abuse used especially by children, though much less commonly than in the past. In both of its meanings, retard is perceived as insulting to disabled people. See also cripple.


non·re·tard·ed, adjectiveun·re·tard·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for retarded

/ (rɪˈtɑːdɪd) /

underdeveloped, esp mentally and esp having an IQ of 70 to 85See also ESN, mental handicap, subnormal (def. 2)
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