From Longman Dictionary of Contemporary Englishlibellousli‧bel‧lous British English, libelous American English /ˈlaɪbələs/ adjective SCCUNTRUEcontaining untrue written statements about someone which could make other people have a bad opinion of them → slanderous libellous gossip
Examples from the Corpus
libellous• Another problem is its political partisanship, which has led to reporting which is quite often libellous. 