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"
Synonyms
- harebrainedvery foolish
- madroused to anger; affected with madness or insanity; marked by uncontrolled excitement or emotion; very foolish