calumniate v. + Add to list ca·lum·ni·ate SynonymsEtymology Synonyms aspersebesmirchdefamedenigrateslandersmearsmirchsullyOrigin First attested in 1554; borrowed from Latin calumniātus, perfect passive participle of calumnior (“to blame, cavil at; to accuse falsely”), see -ate (verb-forming suffix).