defamation
Concise Oxford English Dictionary © 2008 Oxford University Press:
defame/dɪˈfeɪm/
▶verb damage the good reputation of.
– derivatives
defamation noun,
defamatory adjective,
defamer noun.
defamation noun,
defamatory adjective,
defamer noun.
– origin ME: from OFr. diffamer, from L. diffamare ‘spread evil report’, from dis- (expressing removal) + fama ‘report’.
'defamation' also found in these Oxford entries:

