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Definitions

mental deficiency

NOUN

disability

Synonyms

STRONGEST

cognitive impairment debilitation impairment incapacitation intellectual disability limitation restriction

STRONG

damage disadvantage incapability incapacity injury

WEAK

disorder malady weakness

Antonyms

STRONGEST

strength

STRONG

advantage

NOUN

deficiency

Synonyms

STRONGEST

dearth defect failing failure fault flaw frailty glitch insufficiency lack scarcity shortage shortcoming weakness

STRONG

absence bug defalcation default deficit demerit dereliction loss need neglect paucity privation scantiness sin want

WEAK

inability to hack it insufficience

Antonyms

STRONGEST

abundance advantage enough excess perfection plenty strength strong point success sufficiency surplus

STRONG

accomplishment achievement

WEAK

adequacy faultlessness satisfaction superfluity

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

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

From The New Yorker • Apr. 27, 2016

"We have no idea what we're signing, in an act of legendary mental deficiency."

From BBC • Oct. 17, 2013

Tall, stout, and comely, all and each of the five eldest seemed to want alike the Promethean fire of intellect, and the exterior grace and manner, which, in the polished world, sometimes supply mental deficiency.

From Rob Roy — Volume 01 by Scott, Walter, Sir