Synonyms of the word

witless

• adj. Destitute of wit or understanding; wanting thought; hence, indiscreet; not under the guidance of judgment.

nitwitted

• adj. Being like a nitwit; being stupid or foolish.

senseless

• adj. Bereft of feeling or consciousness; deprived of sensation; unconscious; insensible.
• adj. Lacking meaning or purpose; without common sense; pointless; meaningless.
• adj. Without consideration, awareness or sound judgement; unreasonable; unwise; stupid.

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.