1. (noun)disability, disablement, handicap, impairment the condition of being unable to perform as a consequence of physical or mental unfitness "reading disability"; "hearing impairment"
3. (noun)hindrance, hinderance, deterrent, impediment, balk, baulk, check, handicap something immaterial that interferes with or delays action or progress
4. (verb)disable, invalid, incapacitate, handicap injure permanently
"He was disabled in a car accident"