Synonyms for
Lunatic
Definition
A person who is mentally ill, especially one who is crazy or behaves in an extreme way.
Synonyms & similar words
Synonyms by register
Formal
Literary
Antonyms
Common collocations
- raving lunatic
- certifiable lunatic
- utter lunatic
- complete lunatic
- acting like a lunatic
- accused of being a lunatic
- dismissed as a lunatic
Word family
Usage note
The word 'lunatic' is often considered offensive and outdated when referring to mental illness. It is more commonly used informally to describe someone acting wildly or irrationally.
Compare "lunatic" with another word →
Example sentences
- The man was acting like a lunatic and scaring people.
- The lunatic was locked up in a hospital for his own safety.
- The driver was a lunatic, swerving in and out of traffic.
- The lunatic's behavior was unpredictable and dangerous.
- The villagers thought she was a lunatic because she talked to animals.
Quotes
I think I'm a lunatic with periods of sanity.
I'm not a lunatic. I'm a businessman.
I'm not a lunatic. I'm a visionary.