1. In an insane manner
   "he behaves crazily when he is off his medication"
   - insanely, dementedly, madly

See also: crazy

• ferrimagnetism
• Ferris wheel
• ferrite
• ferritin
• ferro-
• ferrocerium
• ferroconcrete
• ferrocyanic acid
• ferrocyanide
• ferromagnetic
• ferromagnetism
• ferrous
• ferruginous
• ferrule
• ferry
• ferryboat
• ferrying
• ferryman
• fertile
• Fertile Crescent
• fertile period
• fertile phase
• fertilisable
• fertilisation
• fertilisation age