unfit

unfit
un‧fit /ʌnˈfɪt/ adjective1. not in a good physical condition
   SYN  out of shape:
    She never gets any exercise – she must be really unfit.
2. not good enough to do something or to be used for a particular purpose
    unfit for
    Jenkins is unfit for public office.
    The meat was declared unfit for human consumption (=not suitable to eat).
    The house was unfit for human habitation (=not good enough to live in).
    unfit to do something
    Hubbard was declared mentally unfit to stand trial.
     

THESAURUS

   ▪ unsuitable/not suitable not having the right qualities for a particular person, purpose, or situation: These toys are not suitable for children under 3. | The job was considered unsuitable for women. | Some dogs end up in totally unsuitable homes.
   ▪ not appropriate/inappropriate not suitable for a particular situation or purpose – used especially about someone's behaviour or language: Slang is not appropriate in an academic essay. | Never reward inappropriate behaviour. | It would not be appropriate for us to comment at this stage.
   ▪ wrong not the right thing or person for a particular job or purpose: You’re using the wrong spoon – this is the soup spoon. | She was simply the wrong person for the job.
   ▪ out of place [not before noun] not looking or seeming suitable for that place or situation: The horse drawn carriage looks a little out of place among the busy traffic. | At first I felt a bit out of place.
   ▪ incompatible two ideas or things that are incompatible cannot exist or be done together. Two people who are incompatible are unlikely to have a successful relationship, because they have very different characters, beliefs etc: He considered the role of wife and mother to be incompatible with a career. | Why do totally incompatible people get married?
   ▪ incongruous formal seeming strange and unsuitable, often in a humorous way, because of being unexpected in a particular situation or very different from its surroundings: It seemed incongruous having a dance-band at the funeral. | He was dressed in a three-piece suit with an incongruous tie shaped like a fish.
   ▪ inconvenient an inconvenient place or time is not suitable and causes problems for you: He always seems to call at inconvenient times. | The new station is inconvenient to pedestrians, because it is a long walk from the centre of town.
   ▪ unfit not suitable to be used for something, or not suitable to do something : The boat is not only unfit to live in but is actually unsafe. | The meat was declared unfit for human consumption (=not suitable to eat). | He claims she is an unfit mother. | A jury decided Pryse-Jones was unfit to stand trial at court because of his mental illness. | The house was unfit for human habitation (=not suitable to live in).