Definition of hearsay noun from the Oxford Advanced Learner's Dictionary

 

hearsay

 noun
noun
BrE BrE//ˈhɪəseɪ//
 
; NAmE NAmE//ˈhɪrseɪ//
 
[uncountable]
 
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things that you have heard from another person but do not (definitely) know to be true We can't make a decision based on hearsay and guesswork. hearsay evidenceExtra examples She discovered a world of parties and pleasure she had hitherto only known by hearsay. They started to piece the story together from hearsay. Her evidence was dismissed as hearsay. We can’t make a decision based on hearsay and guesswork.
See the Oxford Advanced American Dictionary entry: hearsay