unsportive
/ˌʌnsˈpɔrtɪv/Definitions
1. adjective
Lacking sportsmanlike qualities; ungentlemanly or unfair in sports or games.
“The umpire was called unsportive for disqualifying the player without giving a warning.”
2. noun
A person who is unsportive; an ungentlemanly or unfair player.
“The coach criticized the unsportive behavior of the opposing team during the match.”