cy·ber·bul·ly
(sī′bər-bo͝ol′ē)v. cy·ber·bul·lied, cy·ber·bul·ly·ing, cy·ber·bul·lies
v.tr. To intimidate or humiliate (someone) persistently by means of the internet, text messaging, or another form of electronic communication.
v.intr. To engage in such intimidation or humiliation.
n. pl. cy·ber·bul·lies A person who engages in cyberbullying.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
cyberbully
(ˈsaɪbəˌbʊlɪ) n,
pl -lies (Communications & Information) someone who uses electronic communication to hurt, persecute or intimidate people
ˈcyberˌbullying n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014