Unhealthy (5)
'unhealthy' is the definition.
(associated in meaning)
This is all the clue.
(Other definitions for unfit that I've seen before include "In bad physical condition" , "not worthy" , "Ill-equipped" , "Incompetent" , "Not in good physical condition, or not suitable" .)
'unhealthy' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for diseased that I've seen before include "Unhealthy" , "Affected with illness" , "Unwell" , "Unsound" , "Infected, ill" .)
'unhealthy' is the definition.
(associated in meaning)
This is the entire clue.
(Other definitions for ill that I've seen before include "state, briefly" , "Off colour?" , "Under the weather" , "Unhealthy" , "Off-colour" .)