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1. Obsolete term for legal insanity
   - lunacy, insaneness
    
2. An acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain
   - rabies, hydrophobia, lyssa
    
3. A feeling of intense anger
   "hell hath no madness like a woman scorned";
   - fury, rage
    
4. The quality of being rash and foolish
   "trying to drive through a blizzard is the height of madness";
   - folly, foolishness, craziness, nuttiness
    
5. Unrestrained excitement or enthusiasm
   "poetry is a sort of divine madness";
   - rabidity, rabidness

Type of: anger, choler, ebullience, enthusiasm, exuberance, insanity, ire, stupidity, zoonosis, zoonotic disease

Encyclopedia: Madness, Money and Music