S: (adj) unfit (below the required standards for a purpose) "an unfit parent"; "unfit for human consumption"
S: (adj) unfit (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"
W: (adj) fit [Opposed to: unfit] (physically and mentally sound or healthy) "felt relaxed and fit after their holiday"; "keeps fit with diet and exercise"