American English

Definition of undoubted adjective from the Oxford Advanced American Dictionary

 

undoubted

 adjective
adjective
NAmE//ʌnˈdaʊt̮əd//
 
[usually before noun]
 
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used to emphasize that something exists or is definitely true She has an undoubted talent as an organizer.
undoubtedly
 
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adverb There is undoubtedly a great deal of truth in what he says.
See the Oxford Advanced Learner's Dictionary entry: undoubted