TOEFL vigorous Definition Strong, active, and energetic in effort or movement. Example "He made a vigorous argument in favor of climate reform." Sign in to save TOEFL Quiz → ← vigor vile → Study tips featuring "vigorous" Map Each Word Into a Connected Network Track How TOEFL Words Behave With Others Group TOEFL Words Around Academic Themes Related words TOEFL brighten GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze