English

Alternative forms

• head-case, head case

Noun

headcase ‎(plural headcases)

1. (informal) A mentally unbalanced, unpredictable person, especially one who displays aggressive behavior.
   • 2004, Sean Gregory, "Full-Court Stress," Time, 5 Apr.:

     "A stockbroker doesn't have 80,000 people sitting behind him just waiting for a mistake," says Jim Fassel, whom fans serenaded with "Fire Fassel!" chants during his final weeks as head coach of the New York Giants last season. "It can drive you crazy." From head coach to head case in three easy steps.