IDIOCY

idiocy, amentia

(noun) extreme mental retardation

Source: WordNet® 3.1

Etymology

Noun

idiocy (countable and uncountable, plural idiocies)

(psychology) The state or condition of being an idiot; the quality of having an intelligence level far below average; mental retardation.

An act lacking intelligence or sense; an instance of senselessness; extremely foolish behaviour.

Synonyms

• imbecility

• stupidity

Anagrams

• dioicy

Source: Wiktionary

Id"i*o*cy, n. Etym: [From idiot; cf. Gr. Idiot, and cf. Idiotcy.]

Definition: The condition or quality of being an idiot; absence, or marked deficiency, of sense and intelligence. I will undertake to convict a man of idiocy, if he can not see the proof that three angles of a triangle are equal to two right angles. F. W. Robertson.

Source: Webster’s Unabridged Dictionary 1913 Edition