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insane
01
extremely unreasonable or stupid, particularly in a manner that is likely to be dangerous
Example
Jumping off a bridge without a parachute is insane.
It 's insane to play with fire near a gas leak.
It 's insane to drive while intoxicated.
02
(of a person) having a severe mental disorder that affects thinking, behavior, or emotions
03
so extreme or shocking that it seems unreal or hard to believe
04
having such an astonishing quality that it is almost unbelievable
Example
Jumping off a bridge without a parachute is insane.
It's insane to play with fire near a gas leak.
It's insane to drive while intoxicated.
Attempting to swim across a fast-flowing river would be insane.
It would be insane to try to jump off a moving train.
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