GRE TOEFL IELTS exertion Definition The use of physical or mental effort; great effort. Example "Running the marathon required tremendous exertion." Sign in to save GRE Quiz → TOEFL Quiz → IELTS Quiz → ← exert exhale → Study tips featuring "exertion" 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