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"
fit physically and mentally sound or healthy; "felt relaxed and fit after their holiday"; "keeps fit with diet and exercise"
ill,
sick presaging ill fortune; "ill omens"; "ill predictions"; "my words with inauspicious thunderings shook heaven"- P.B.Shelley; "a dead and ominous silence prevailed"; "a by-election at a time highly unpropitious for the Government"
unhealthy not conducive to good health; "an unhealthy diet of fast foods"; "an unhealthy climate"