
verb (used with object), ca·lum·ni·at·ed, ca·lum·ni·at·ing.
- to make false and malicious statements about; slander.
verb
- (tr) to slander
1550s, from Latin calumniatus, past participle of calumniari “to accuse falsely,” from calumnia “slander, false accusation” (see calumny). Related: Calumniated; calumniating.