Definition of defamatory adjective from the Oxford Advanced American Dictionary

 

defamatory

 adjective
adjective
NAmE//dɪˈfæməˌtɔri//
 
(formal)
 
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(of speech or writing) intended to harm someone by saying or writing bad or false things about them The article was highly defamatory.
See the Oxford Advanced Learner's Dictionary entry: defamatory