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Crazy vs. Insane — What's the Difference?

Difference Between Crazy and Insane

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Definitions

Crazy

Mad, especially as manifested in wild or aggressive behaviour
Stella went crazy and assaulted a visitor
A crazy look

Insane

Of, exhibiting, or afflicted with mental derangement. Not used in psychiatric diagnosis.

Crazy

Extremely enthusiastic
I'm crazy about Cindy
A football-crazy bunch of boys

Insane

Characteristic of or associated with persons who are mentally deranged
An insane laugh.
Insane babbling.

Crazy

(of an angle) appearing absurdly out of place or unlikely
The monument leant at a crazy angle

Insane

Intended for use by such persons
An insane asylum.
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Crazy

Extremely
I've been crazy busy

Insane

Having been determined to be in a condition that meets the legal definition of insanity.

Crazy

A mad person
Keep that crazy away from me

Insane

Immoderate; wild
Insane jealousy.

Crazy

Mentally deranged.

Insane

Very foolish; absurd
Took insane risks behind the wheel.
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Crazy

(Informal) Odd or eccentric in behavior.

Insane

Exhibiting unsoundness or disorder of mind; not sane; utterly mad.

Crazy

Possessed by enthusiasm or excitement
The crowd at the game went crazy.

Insane

Used by or relating to insane people.
An insane hospital
An insane asylum

Crazy

Immoderately fond; infatuated
Was crazy about boys.

Insane

Causing insanity or madness.

Crazy

Intensely involved or preoccupied
Is crazy about cars and racing.

Insane

(informal) Characterized by insanity or the utmost folly; ridiculous; impractical.
An insane plan
An insane amount of money

Crazy

Foolish or impractical; senseless
A crazy scheme for making quick money.

Insane

(slang) Extremely good; incredibly amazing.
That guy is insane at FPS games.

Crazy

Intensely annoyed or irritated
It makes me crazy when you don't tell me you're going to be late.

Insane

Exhibiting unsoundness or disorder of mind; not sane; mad; deranged in mind; delirious; distracted. See Insanity, 2.

Crazy

Disorderly or askew
One of the old window shutters hung at a crazy angle.

Insane

Used by, or appropriated to, insane persons; as, an insane hospital.

Crazy

(Informal) Extremely; very
That restaurant's always crazy busy on weekends, but it's worth the wait.

Insane

Causing insanity or madness.
Or have we eaten on the insanerootThat takes the reason prisoner ?

Crazy

One who is or appears to be mentally deranged
"To them she is not a brusque crazy, but 'appropriately passionate'" (Mary McGrory).

Insane

Characterized by insanity or the utmost folly; chimerical; unpractical; as, an insane plan, attempt, etc.
I know not which was the insane measure.

Crazy

Of unsound mind; insane; demented.
His ideas were both frightening and crazy.

Insane

Afflicted with or characteristic of mental derangement;
Was declared insane
Insane laughter

Crazy

Out of control.
When she gets on the motorcycle she goes crazy.

Insane

Very foolish;
Harebrained ideas
Took insane risks behind the wheel
A completely mad scheme to build a bridge between two mountains

Crazy

Very excited or enthusiastic.
He went crazy when he won.

Crazy

In love; experiencing romantic feelings.
Why is she so crazy about him?

Crazy

(informal) Very unexpected; wildly surprising.
The game had a crazy ending.

Crazy

(obsolete) Flawed or damaged; unsound, liable to break apart; ramshackle.

Crazy

(obsolete) Sickly, frail; diseased.

Crazy

(slang) Very, extremely.
That trick was crazy good.

Crazy

An insane or eccentric person; a crackpot.

Crazy

Eccentric behaviour; lunacy; craziness.

Crazy

Characterized by weakness or feebleness; decrepit; broken; falling to decay; shaky; unsafe.
Piles of mean andcrazy houses.
One of great riches, but a crazy constitution.
They . . . got a crazy boat to carry them to the island.

Crazy

Broken, weakened, or dissordered in intellect; shattered; demented; deranged.
Over moist and crazy brains.

Crazy

Inordinately desirous; foolishly eager.
The girls were crazy to be introduced to him.

Crazy

Someone deranged and possibly dangerous

Crazy

Affected with madness or insanity;
A man who had gone mad

Crazy

Foolish; totally unsound;
An impractical solution
A crazy scheme
Half-baked ideas
A screwball proposal without a prayer of working

Crazy

Marked by foolish or unreasoning fondness;
She was crazy about him
Gaga over the rock group's new album
He was infatuated with her

Crazy

Possessed by inordinate excitement;
The crowd went crazy
Was crazy to try his new bicycle

Crazy

Bizarre or fantastic;
Had a crazy dream
Wore a crazy hat

Crazy

Intensely enthusiastic about or preoccupied with;
Crazy about cars and racing

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