unsporting
Word family (noun) sport (adjective) sporting unsporting sporty (verb) sport
From Longman Dictionary of Contemporary Englishunsportingun‧sport‧ing /ʌnˈspɔːtɪŋ $ -ˈspɔːr-/ adjective behaving in an unfair way, especially towards an opponent in a game or competitionExamples from the Corpusunsporting• It was a filthy trick, totally unsporting and certainly not cricket.• There were rival theatrical cliques, and rifts and vendettas among the games people over alleged unsporting behaviour.