unfit - definition and synonyms

adjective [not usually before noun] 

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  1. 1
    below the accepted quality or standard for a particular use or purpose
    unfit to do something:

    The boat was unfit to sail.

    unfit for:

    Most of the district’s housing is unfit for habitation.

     Synonyms and related words
    1. a.
      not having the right qualities to do a particular job or activity

      an unfit mother

      unfit to do something:

      Summing up, the judge said that Brookes was unfit to hold political office.

  2. 2
    not feeling healthy or strong because you do not take regular exercise
    1. a.
      not healthy enough to work, do military service, play in a team etc
      unfit for:

      A persistent back problem eventually rendered him unfit for work.