1. That cripples, disables or incapacitates
   "The incapacitating injury forced him to retire from sports";
   - crippling, disabling

1. Make unable to perform a certain action
   "The injury incapacitated him for several months";
   - disable, disenable [archaic]
    
2. Injure permanently
   "He was incapacitated in a car accident";
   - disable, invalid, handicap

See also: unhealthful [rare], unhealthy

Type of: alter, change, injure, modify, wound