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" Study the Exact Words Examiners Use Group Words Together by Emotional Tone Map Each Word Into a Connected Network Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant