Synonyms for
Insane
Definition
Insane means someone or something that is mentally ill, irrational, or extremely foolish.
Synonyms & similar words
Synonyms by register
Formal
Literary
Antonyms
Common collocations
- utterly insane
- completely insane
- insane asylum
- insane idea
- insane amount
- insane speed
- driving me insane
Word family
Usage note
While 'insane' can refer to a clinical mental illness, it is often used informally to describe something extreme, illogical, or exciting. Be mindful of the context to avoid trivializing serious mental health conditions.
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Example sentences
- The inmate was declared insane and sent to a mental institution.
- It's insane to think you can eat an entire pizza by yourself.
- He had an insane amount of energy after drinking three cups of coffee.
- The roller coaster ride was insane and made me scream.
- The politician's policy ideas were insane and would never work in reality.
Quotes
Insanity is doing the same thing over and over again and expecting different results. - Albert Einstein
The insane, on occasion, are not without their charms. - Kurt Vonnegut
The only difference between me and a madman is that I'm not mad. - Salvador Dali