Synonyms of the word

unintelligent

• adj. Not intelligent.

brainless

• adj. (not comparable) Having no brain.
• adj. (comparable) Unintelligent, with little common sense.

feebleminded

• adj. Alternative spelling of feeble-minded.

half-witted

• adj. Having a low intelligence; dim-witted.

headless

• adj. Without a head; decapitated.
• adj. Without leadership.
• adj. (linguistics, of a phrase or compound) Not having a head morpheme or word.
• adj. (computing) Running without a graphical user interface; running without any attached output device (e…
• adj. (of beer) Without a head of foam.
• adj. (obsolete) Heedless.

idiotic

• adj. Pertaining to or resembling an idiot; afflicted with idiocy.
• adj. Having the quality of idiocy; very foolish; stupid; nonsensical.

imbecile

• n. (obsolete) A person with limited mental capacity who can perform tasks and think only like a young child,…
• n. (pejorative) A fool, an idiot.
• adj. (dated) Destitute of strength, whether of body or mind; feeble; impotent; especially, mentally weak.

imbecilic

• adj. like or as an imbecile; so senseless as to be laughable; absurd, foolish, stupid, idiotic.

moronic

• adj. (medicine, dated) having a mental age of between seven and twelve years.
• adj. (slang) behaving in the manner of a moron; idiotic; stupid.

retarded

• adj. Delayed; delayed in development, hindered; impeded.
• adj. (psychology, now offensive, dated) Having mental retardation; mentally deficient or underdeveloped.
• adj. (psychology, now offensive, dated) Specifically, having an IQ below 70.
• adj. (colloquial, derogatory, offensive) Stupid, dumb.
• adj. (physics) Designating a parameter of an electromagnetic field which is adjusted to account for the finite…
• v. simple past tense and past participle of retard.

slow-witted

• adj. Lacking a keen or swift intellect, not too bright or not too swift.

stupid

• adj. Lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence.
• adj. To the point of stupor.
• adj. (archaic) Characterized by or in a state of stupor; paralysed.
• adj. (archaic) Lacking sensation; inanimate; destitute of consciousness; insensate.
• adj. (slang) Amazing.
• adj. (slang) damn, annoying, darn.
• adv. (slang, dated) Extremely.
• n. A stupid person; a fool.
• n. (colloquial, uncountable) The state or condition of being stupid.