Difference between Stupid and Imbecile

STUPID vs IMBECILE: NOUN

A person with limited mental capacity who can perform tasks and think only like a young child, in medical circles meaning a person who lacks the capacity to develop beyond the mental age of a normal five to seven-year-old child.
A person with a degree of mental retardation between that of an idiot and a moron; in a former classification of mentally retarded person, it applied to a person with an adult mental age of from four to eith years, and an I.Q. of from 26 to 50.
One destitute of strength; esp., one of feeble mind; -- sometimes used as a pejorative term.
One who is imbecile.
A person of moderate to severe mental retardation having a mental age of from three to seven years and generally being capable of some degree of communication and performance of simple tasks under supervision. The term belongs to a classification system no longer in use and is now considered offensive.
A person who is considered foolish or stupid.
A person of subnormal intelligence
A fool, an idiot.

Very dull; insensible; senseless; wanting in understanding; heavy; sluggish; in a state of stupor; -- said of persons.
Resulting from, or evincing, stupidity; formed without skill or genius; dull; heavy; -- said of things.
Lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence.
To the point of stupor.
Lacking sensation; inanimate; destitute of consciousness; insensate.
Used to express disparagement or exasperation.
Dazed, stunned, or stupefied.
Marked by a lack of intelligence or care; foolish or careless.
Tending to make poor decisions or careless mistakes.
Slow to learn or understand; obtuse.
Without much intelligence
Characterized by or in a state of stupor; paralysed.
Lacking or marked by lack of intellectual acuity
Damn, annoying, darn
Amazing.
In a state of mental numbness especially as resulting from shock
Lacking intelligence

Having a mental age of three to seven years
Destitute of strength, whether of body or mind; feeble; impotent; esp., mentally wea; feeble-minded.

Synonyms Heavy, dull, drowsy, lethargic, comatose, torpid.
Characterized by mental dullness or inanity; witless; senseless; foolish; inane: as, a stupid joke; a stupid book; stupid fears.
Lacking ordinary activity of mind; dull in ideas or expression; slow-witted; obtuse; crass.
Muddy-brained, muddled.
In a state of stupor; having the faculties deadened or dulled; stupefied, either permanently or temporarily; benumbed.
Silly, Foolish, etc. (see absurd); flat, tame, humdrum, pointless, prosaic. See list under foolish.

To make imbecile; weaken.
To embezzle.
Without physical strength; feeble; impotent; helpless.
Mentally feeble: fatuous; having the mental faculties undeveloped or greatly impaired. See imbecility.
Synonyms and Foolish, driveling, idiotic. See debility.
Marked by mental feebleness or incapacity; indicating weakness of mind; inane; stupid: as, imbecile efforts; an imbecile speech.

Senseless, Cloddish, Obtuse, Thickheaded, Imbecilic, Imbecile, Dolt, Fool, Boneheaded, Dopey, Brainless, Unintelligent, Moronic, Foolish, Dumb

Idiotic, Putz, Dumbass, Nutcase, Twit, Jackass, Lunatic, Half wit, Changeling, Retard, Unintelligent, Stupid, Cretin, Idiot, Moron

Senseless, Cloddish, Obtuse, Thickheaded, Imbecilic, Imbecile, Dolt, Fool, Boneheaded, Dopey, Brainless, Unintelligent, Moronic, Foolish, Dumb

Douche, Idiotic, Putz, Dumbass, Nutcase, Twit, Jackass, Lunatic, Changeling, Retard, Unintelligent, Stupid, Cretin, Idiot, Moron

This is just so utterly stupid it boggles my mind and you should be ashamed for saying such a stupid thing.
IWT was stupid, the name was stupid, and why should anyone listen to me?
Stupid stupid claims people who do not even research a claim and try to cover up their mistakes.
If Abbott is not stupid, why does he keep doing stupid things?
There are no stupid questions just stupid people.
Play stupid games, win stupid prizes I guess.
To be truly stupid, you cannot play stupid.
He made some fundamentally stupid people _look_ stupid.
Then I went and did a stupid, stupid thing.
My mama says that stupid is as stupid does.