GRE TOEFL IELTS idle Definition Not active, in use, or in progress; lazy or inactive. Example "The factory machines have been idle for weeks." Sign in to save GRE Quiz → TOEFL Quiz → IELTS Quiz → ← idiot idol → Study tips featuring "idle" 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