unfit >> ʌnˈfɪt
Definition: [adjective] (of a thing) not of the necessary quality or standard to meet a particular purpose.
Example: the land is unfit for food crops
Definition: [adjective] (of a person) not in good physical condition, typically as a result of failure to take regular exercise.
Example: the increase in the number of unfit and overweight children is alarming
Definition: [verb] make (something or someone) unsuitable; disqualify.
Example: they say that we are trying to give poor children tastes which will only unfit them for a life of hardship and toil