Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Madness, insanity, mental derangement.

from The Century Dictionary and Cyclopedia

  • n. Disease of the mind; insanity.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin vesania, from vesanus ‘mad’, from ve- ‘not’ + sanus ‘sane’.

Examples

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