defame (v.)

c. 1300, from Old French defamer (13c., Modern French diffamer), from Medieval Latin defamare, from Latin diffamare "to spread abroad by ill report, make a scandal of," from dis- suggestive of ruination + fama "a report, rumor" (from PIE root *bha- (2) "to speak, tell, say"). Related: Defamed; defaming.