crazy

[ krey-zee ]

adjective

, cra·zi·er, cra·zi·est.

1. mentally deranged; demented; insane.

   Synonyms: lunatic, crazed

   Antonyms: sane

2. Informal. unpredictable, nonconforming, or odd:

   All I can say is she's the craziest person I know.

3. Informal. unusual; bizarre; singular:

   She always wears a crazy hat.

4. Informal. senseless; nonsensical; totally unsound:

   Surely you don’t plan to invest money in that crazy scheme!

   Synonyms: foolhardy, imprudent, foolish

5. Informal. extremely busy, hectic, chaotic, etc.:

   Yesterday was such a crazy day I hardly had time to eat.

6. Informal. intensely enthusiastic; passionately excited (usually followed by about or for ):

   Like many kids, he was crazy for baseball and yearned to be a professional ballplayer.

   Antonyms: dispassionate, cool

7. Informal. very enamored or infatuated (usually followed by about or for ):

   It's obvious he's just crazy about her.

8. Informal. intensely anxious or eager; impatient:

   I'm crazy to try those new skis.

9. Informal. very annoyed, frustrated, or bothered:

   It makes me crazy that some kids don't get a fair chance in life.

10. Informal. having an unusual, unexpected, or random quality, behavior, result, pattern, etc.:

    I'm back in Connecticut in a crazy twist of events, living in the same town where I grew up.

11. Slang. wonderful; excellent; perfect:

    That's crazy, man, crazy.

12. Archaic. likely to break or fall to pieces.

    Synonyms: passionate, impassioned, ardent

    Antonyms: stable

13. Archaic. weak, infirm, or sickly.

    Antonyms: healthy, strong

adverb

1. Informal. extremely; madly:

   December is a crazy busy month for us.

   That new clothing store is crazy popular with teenage girls.

noun

, plural cra·zies.

1. a person who is mentally deranged or insane.
2. Informal. an unpredictable, nonconforming person; oddball:

   Next door is a house full of crazies who wear weird clothes and come in at all hours.

3. the crazies, Informal. a sense of extreme unease, nervousness, or panic; extreme jitters:

   The crew was starting to get the crazies from being cooped up belowdecks for so long.

crazy

/ ˈkreɪzɪ /

adjective

1. informal.
   insane
2. fantastic; strange; ridiculous

   a crazy dream

3. informal.
   postpositive; foll by about or over extremely fond (of)
4. slang.
   very good or excellent

noun

1. informal.
   a crazy person

Derived Forms

• ˈcrazily, adverb
• ˈcraziness, noun

Other Words From

• cra·zi·ly adverb
• cra·zi·ness noun
• half-cra·zy adjective

Word History and Origins

Origin of crazy¹

First recorded in 1570–80; craz(e) + -y ¹

Idioms and Phrases

Idioms

1. like crazy, Informal.
   1. with great enthusiasm or energy; to an extreme:

      We shopped like crazy and bought all our Christmas gifts in one afternoon.

   2. with great speed or recklessness:

      He drives like crazy once he's out on the highway.

More idioms and phrases containing crazy

• drive someone crazy
• like crazy

Synonym Study

See mad.

Example Sentences

“We can all be arguing like crazy people but when you attack one, you attack us all.”

From Essence.com

It was really crazy, and, at some point, you have to give yourself over to it.

From Vox

What I like about these episodes is the way they capture the stir-crazy energy of living in quarantine after all these months.

From Vox

The butterflies were the craziest and most surreal experience.

From Outside Online

So, I’ve never been one to really go crazy or do anything that wild, but I will say this.

From Ozy

You were basically the guy to do every dictator or crazy character, from Gaddafi and Ahmadinejad to Bin Laden.

From The Daily Beast

"That was crazy," Lynn Jenkins of Kansas muttered to another member as she walked to greet Boehner.

From The Daily Beast

He came to Phoenix once and we went up to see him, and they got so crazy that I ended up trying to hitchhike home.

From The Daily Beast

Just who is crazy enough to go swimming when the pond across the street has a layer of ice across the top?

From The Daily Beast

That goodness steered him clear of the Sex Boys, the Crazy Homicides, the Sons of Nuns, and the other gangs of East New York.

From The Daily Beast

All Weimar adores him, and people say that women still go perfectly crazy over him.

From Project Gutenberg

The wheezy, crazy mechanism of the car went to bits in unexpected places.

From Project Gutenberg

Half-fed men would dig for diamonds, and men sheltered by a crazy roof erect the marble walls of palaces.

From Project Gutenberg

Sometimes he looks at me as if he were going to break out with that crazy idea to which he treated me the other day.

From Project Gutenberg

You would think the poor teacher would be driven crazy, but he seems as calm as a daisy in a June breeze.

From Project Gutenberg

Related Words

• absurd
• bizarre
• foolish
• goofy
• insane
• irresponsible
• ludicrous
• odd
• outrageous
• preposterous
• ridiculous
• silly
• strange
• weird