unfit in WordNet English dictionary

1. physically unsound or diseased
   "has a bad back"; "a bad heart"; "bad teeth"; "an unsound limb"; "unsound teeth"
   bad  unfit  unsound 
   
2. 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"
   unfit 
   
3. below the required standards for a purpose
   "an unfit parent"; "unfit for human consumption"
   unfit 
   

1. make unfit or unsuitable
   "Your income disqualifies you"
   disqualify  unfit  indispose