GRE TOEFL IELTS vicious Definition Spiteful, cruel, or violent in nature. Example "The dog launched a vicious attack on the intruder." Sign in to save GRE Quiz → TOEFL Quiz → IELTS Quiz → ← vicinity vicissitude → Study tips featuring "vicious" Audit Your Own Writing to Find Gaps 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