All boneheaded synonyms

adj boneheaded

• stupid — lacking ordinary quickness and keenness of mind; dull.
• stupid — lacking ordinary quickness and keenness of mind; dull.
• ill-conceived — badly conceived or planned: an ill-conceived project.
• absurd — If you say that something is absurd, you are criticizing it because you think that it is ridiculous or that it does not make sense.
• asinine — If you describe something or someone as asinine, you mean that they are very foolish.
• brainless — If you describe someone or something as brainless, you mean that you think they are stupid.
• dense — Something that is dense contains a lot of things or people in a small area.
• dull — not sharp; blunt: a dull knife.
• foolish — resulting from or showing a lack of sense; ill-considered; unwise: a foolish action, a foolish speech.
• idiotic — of, relating to, or characteristic of an idiot.
• imbecile — Informal. a dunce; blockhead; dolt: Don't stand there like an imbecile. Open the door!.
• inane — lacking sense, significance, or ideas; silly: inane questions.
• insensate — not endowed with sensation; inanimate: insensate stone.
• jerky — characterized by jerks or sudden starts; spasmodic.
• ludicrous — causing laughter because of absurdity; provoking or deserving derision; ridiculous; laughable: a ludicrous lack of efficiency.
• lunatic — (no longer in technical use; now considered offensive) an insane person.
• mad — mentally disturbed; deranged; insane; demented.
• mindless — without intelligence; senseless: a mindless creature.
• moronic — Informal. a person who is notably stupid or lacking in good judgment: I wonder why they elected that narrow-minded moron to Congress.
• puerile — of or relating to a child or to childhood.
• sappy — abounding in sap, as a plant.
• silly — weak-minded or lacking good sense; stupid or foolish: a silly writer.
• simple — easy to understand, deal with, use, etc.: a simple matter; simple tools.
• vacuous — without contents; empty: the vacuous air.
• witless — lacking wit or intelligence; stupid; foolish.
• birdbrained — a stupid, foolish, or scatterbrained person.
• lamebrained — a dunce; booby; fool.
• backward — A backward movement or look is in the direction that your back is facing. Some people use backwards for this meaning.
• batty — If you say that someone is batty, you mean that they are rather eccentric or slightly crazy.
• crazy — If you describe someone or something as crazy, you think they are very foolish or strange.
• dumb — lacking intelligence or good judgment; stupid; dull-witted.
• harebrained — giddy; reckless.
• ignorant — lacking in knowledge or training; unlearned: an ignorant man.
• impractical — not practical or useful.
• indiscreet — not discreet; lacking prudence, good judgment, or circumspection: an indiscreet remark.
• retarded — characterized by a slowness or limitation in intellectual understanding and awareness, emotional development, academic progress, etc.
• senseless — destitute or deprived of sensation; unconscious.
• short-sighted — unable to see far; nearsighted; myopic.
• slow — moving or proceeding with little or less than usual speed or velocity: a slow train.
• sophomoric — of or relating to a sophomore or sophomores.
• underdeveloped — improperly or insufficiently developed.
• unformed — not definitely shaped; shapeless or formless.
• blockhead — a stupid person
• feeble-minded — lacking the normal mental powers.
• imbecilic — of, relating to, or characteristic of an imbecile.
• dim-witted — a stupid or slow-thinking person.
• dopey — stupid; inane: It was rather dopey of him to lock himself out.
• insensitive — deficient in human sensibility, acuteness of feeling, or consideration; unfeeling; callous: an insensitive person.
• obtuse — not quick or alert in perception, feeling, or intellect; not sensitive or observant; dull.
• slow-witted — mentally slow or dull; slow in comprehension and thinking.