Definition of unbeaten adjective from the Oxford Advanced American Dictionary

 

unbeaten

 adjective
adjective
NAmE//ʌnˈbitn//
 
(sport)
 
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not having been defeated The Raptors are unbeaten in their last four games. They will be putting their unbeaten record to the test next Saturday.
See the Oxford Advanced Learner's Dictionary entry: unbeaten