Besmearer is a term used to describe someone who publicly tarnishes another's reputation. This word can also be replaced with a range of synonyms, such as defamer, slanderer, libeler or calumniator. A defamer is someone who spreads false or malicious statements about another individual. Slanderer and libeler refer to someone who engages in verbal or written defamation respectively. Calumniator is a fancier word for someone who seeks to damage others' reputations by spreading lies or other harmful accusations. Despite the different shades of meaning, all of these words capture the act of besmirching or smearing another's character, integrity, or honor.