unsuited

From un- +‎ suited.

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unsuited (comparative more unsuited, superlative most unsuited)

1. Not suited to a specific purpose.
   • 1842, A. Taylor, “On the Curative Influence of the Climate of Pau, and the Mineral Waters of the Pyrénées, on Disease, &c.”, in The Lancet‎, volume II, page 885:

     […] we are convinced, from considerable experience and observation, that the class of diseases described by Sir James as unsuited to the climate of Pau, et vice versâ […]

   • 1933, James Truslow Adams, Henry Adams:

     It might have been a good thing if he had, unsuited as he was physically, but the mood passed easily under fraternal dissuadings and a feeling of duty toward his father.

   • 2011 June 11, Robin Finn, “Sunday Routine: Jessica Walter”, in The New York Times, retrieved 5 Dec. 2011:

     Reggie was a “release” from Guiding Eyes; he kept leading his trainers into light poles, so he was deemed temperamentally unsuited to be a service dog.

2. Not compatible; mismatched.
3. Not wearing a suit.

   an unsuited astronaut

4. (poker, said of two or more cards) Not of the same suit.
   • 2005, Dennis Purdy, The Illustrated Guide to Texas Hold'em, page 270:

     You have been dealt King-9 unsuited ("canine") in your pocket.