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Insane vs Crazy

Both 'insane' and 'crazy' are adjectives used to describe someone or something as mentally unstable or irrational. They are often used interchangeably, but 'insane' is considered more formal and carries a stronger connotation of mental illness, while 'crazy' is more colloquial and can have a broader range of meanings.

Last updated: March 25, 2024 • 979 views

Insane

The word 'insane' is a correct adjective used to describe someone or something as mentally unstable or irrational.

It is more formal than 'crazy' and carries a stronger connotation of mental illness. It is often used in legal or medical contexts.

Examples:

  • The murderer was found to be legally insane.
  • The idea of jumping out of a plane seems insane to me.

Alternatives:

  • mentally unstable
  • irrational
  • mad
  • deranged
  • psychotic

Crazy

The word 'crazy' is a correct adjective used to describe someone or something as mentally unstable or irrational.

It is more colloquial than 'insane' and can have a broader range of meanings, including excitement or enthusiasm.

Examples:

  • She's crazy if she thinks she can finish that project in one day.
  • I'm crazy about the new restaurant in town.
  • But we're talking about Sitting Bull and Crazy Horse.
  • Crazy Ed and his vampire story.
  • Crazy pants encrypted the SIM card.
  • Crazy and suicidal, but very impressive.
  • He was a good guy. Crazy, though.
  • Whoever killed Crazy Larry must've killed Jimmy.
  • Crazy little friend of Xena's.
  • Crazy carrot boy took my baby.
  • Crazy Diego killed him on camera.
  • Jerry, Carlo, Crazy Schmidt.
  • Crazy vet rat don't scare me none.
  • Dad! He's Just A Crazy Old Cyborg.
  • Crazy scientist turns himself into some kind of a monster.
  • Crazy like a fox, my little nephew.
  • I know who Crazy Joe is.
  • Maybe you should try "You're Crazy" down the street.
  • Crazy Eddie was right all along.
  • Crazy drunk driver's aorta dissected without even breaking a rib or dropping a lung.
  • That's my new Crazy story for A.A.
  • Crazy guy with a gun shot out a window, depressurized the cabin.

Alternatives:

  • mad
  • nuts
  • bonkers
  • loony
  • off the wall

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