WordWeb Online

1. Physically unsound or diseased
   - bad, unsound
    
2. Below the required standards for a purpose
   "an unfit parent"; "unfit for human consumption"
    
3. Not in good physical or mental condition; out of condition
   "fat and very unfit"; "certified as unfit for army service"; "drunk and unfit for service"

1. Make unfit or unsuitable
   - disqualify, indispose

Derived forms: unfits, unfitted, unfitter, unfittest, unfitting

See also: afflicted, apractic, apraxic, bandy, bandy-legged, bowed[2], bowleg, bowlegged, broken-backed, crippled, crookback, crookbacked, dipped, disabled, flabby, flaccid, game [informal], gammy [Brit, informal], gibbous, gimpy [N. Amer, informal], halt [archaic], halting, handicapped, humpbacked, humped, hunchbacked, ill, impaired, knock-kneed, kyphotic, lame, lordotic, maimed, mutilated, sick, soft, spavined, subhuman, swayback, swaybacked, unhealthy, unsound, unsuitable

Type of: alter, change, modify

Antonym: fit