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Meaning of word insane from English dictionary with examples, synonyms and antonyms.

insane   adjective

Meaning : Afflicted with or characteristic of mental derangement.

Example : Was declared insane.
Insane laughter.

Mentally healthy. Free from mental disorder.

Appears to be completely sane.
sane

Meaning : Very foolish.

Example : Harebrained ideas.
Took insane risks behind the wheel.
A completely mad scheme to build a bridge between two mountains.

Synonyms : harebrained, mad