unsuited

adj

1. Not suited to a specific purpose.

   “[…] 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 […]”

   “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.”

   “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. Not of the same suit.

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