cyberbullying Syllabification: (cy·ber·bul·ly·ing)Pronunciation: /ˌsībərˈbo͝olēiNG/Definition of cyberbullying noun the use of electronic communication to bully a person, typically by sending messages of an intimidating or threatening nature:children may be reluctant to admit to being the victims of cyberbullyingDerivatives cyberbully noun cyberbullying in other Oxford dictionaries Definition of cyberbullying in the British & World English dictionary