What is Unfit ?
Unfit is adj 1. not fit, not in good phys- ical condition I used to play a lot of tennis but I’ve got unfit during the winter. He’s so unfit, he goes red in the face if he simply bends down to pick something up off the floor. 2. unfit for not suitable for He was classed as unfit for service in the police force. unfit for human consumption not good enough to be eaten by people The meat was found to be unfit for human con- sumption. unfit for human habitation not of good enough standard for people to live in The house has been condemned as unfit for human habitation. The old houses were de- clared unfit for human habitation and pulled down.
source: Easier English, Student Dictionary Upper Intermediate Level