TOEFL vex Definition To make someone annoyed, frustrated, or worried. Example "The unanswered questions began to vex the detective." Sign in to save TOEFL PDF — $25 ← veto vexation → Study tips featuring "vex" TOEFL Academic Vocabulary: Study by Topic 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