GRE TOEFL besmirch Definition To damage or tarnish someone's reputation or the purity of something. Example "False rumors besmirched her good name." Sign in to save GRE Quiz → TOEFL Quiz → ← besiege bestial → Study tips featuring "besmirch" Write GRE Words Into Your Own Sentences TOEFL Academic Vocabulary: Study by Topic Related words GRE swill GRE taper GRE testy GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct