“Crazy” is a versatile term used to describe someone or something that is unpredictable, intense, or mentally unstable.
Synonyms for crazy
- Insane
- Mad
- Deranged
- Lunatic
- Maniacal
Definition & Meaning for crazy
The definition of “crazy” is having a severe mental disorder or being wildly enthusiastic about something. It implies a departure from normal behavior or reasoning.
Another word for crazy in a sentence
If you’re looking for another way to say “crazy,” consider using “insane.” For example, “She had an insane idea for the project.”

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