TOEFL IELTS occur Definition To happen or take place; to come into existence. Example "Accidents can occur even when you're being careful." Sign in to save TOEFL Quiz → IELTS Quiz → ← occupy occurrence → Study tips featuring "occur" Map Each Word Into a Connected Network Audit Your Own Writing for Lexical Resource Track How TOEFL Words Behave With Others 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