Definition

1. Adjective:

   • Intensely enthusiastic about or preoccupied with: Used to describe someone who has an extremely strong interest in or passion for something.
   • Bizarre or fantastic: Used to describe something that is very strange, unusual, or imaginative.
   • Possessed by inordinate excitement: Used to describe a state of being extremely excited, agitated, or out of control.
   • Foolish; totally unsound: Used to describe an idea, plan, or action that is very silly or not sensible.
   • Affected with madness or insanity: (Informal) Used to describe someone who is mentally deranged or behaving in a very irrational way.

2. Noun:

   • Someone deranged and possibly dangerous: (Informal, dated) A person who is considered insane.

Usage Examples

• Adjective:

  • He is crazy about classic cars. (He is intensely enthusiastic about classic cars.)
  • She wore a crazy hat to the party. (She wore a bizarre or fantastic hat to the party.)
  • The fans went crazy when the band came on stage. (The fans became possessed by inordinate excitement.)
  • Driving in that storm was a crazy idea. (Driving in that storm was a foolish idea.)
  • The character in the movie was clearly crazy. (The character was affected with madness.)

• Noun:

  • In the old story, the villagers feared the crazy who lived in the woods. (The villagers feared the deranged person.)

Advanced Usage

• "like crazy": (Informal idiom) To do something with great intensity, energy, or speed.
  • We had to work like crazy to finish the project on time.
• "drive someone crazy": (Informal idiom) To annoy or irritate someone very much.
  • The constant noise is starting to drive me crazy.

Variants and Related Words

• Crazily (adverb): In a crazy manner.
  • He laughed crazily at the joke.
• Craziness (noun): The state or quality of being crazy.
  • The craziness of the situation was overwhelming.

Synonyms

• Adjective (enthusiastic): Passionate, fanatical, ardent.
• Adjective (bizarre): Weird, odd, outlandish.
• Adjective (foolish): Insane, ridiculous, preposterous.
• Adjective (mad): Insane, deranged, unhinged. (Note: These are strong and potentially offensive terms.)

Related Phrasal Verbs/Phrases

• Crazy for: (Informal) To have a strong desire or enthusiasm for someone or something.
  • She's crazy for chocolate ice cream.

Related Idioms

• Stir-crazy: (Adjective) Feeling restless and irritable from being confined or bored.
  • After a week of rain, the kids were getting stir-crazy in the house.

Adjective

1. intensely enthusiastic about or preoccupied with
   • crazy about cars and racing
   • he is potty about her
2. bizarre or fantastic
   • had a crazy dream
   • wore a crazy hat
3. possessed by inordinate excitement
   • the crowd went crazy
   • was crazy to try his new bicycle
4. foolish; totally unsound
   • a crazy scheme
   • half-baked ideas
   • a screwball proposal without a prayer of working
5. affected with madness or insanity
   • a man who had gone mad

Noun

1. someone deranged and possibly dangerous