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Searching for synonyms for insane? Here’s some similar words from our thesaurus you can use instead.
insane as in afflicted with or characteristic of mental derangement
  • "was declared insane"
  • "insane laughter"
insane as in very foolish
  • "harebrained ideas"
  • "took insane risks behind the wheel"
  • "a completely mad scheme to build a bridge between two mountains"


  • harebrained very foolish
  • mad roused to anger; affected with madness or insanity; marked by uncontrolled excitement or emotion; very foolish

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