madness in WordNet English dictionary

1. the quality of being rash and foolish
   "trying to drive through a blizzard is the height of folly"; "adjusting to an insane society is total foolishness"
   folly  foolishness  craziness  madness 
   
2. a feeling of intense anger
   "hell hath no fury like a woman scorned"; "his face turned red with rage"
   fury  rage  madness 
   
3. 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  madness 
   
4. obsolete terms for legal insanity
   lunacy  madness  insaneness 
   
5. unrestrained excitement or enthusiasm
   "poetry is a sort of divine madness"
   madness  rabidity  rabidness