Definition of unsportsmanlike adjective from the Oxford Advanced American Dictionary

 

unsportsmanlike

 adjective
adjective
NAmE//ʌnˈspɔrtsmənˌlaɪk//
 
(disapproving)
 
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not behaving in a fair, generous, and polite way, especially when playing a sport or game unsportsmanlike conduct
See the Oxford Advanced Learner's Dictionary entry: unsportsmanlike