TOEFL IELTS brighten Definition To make or become brighter or more cheerful. Example "The room began to brighten as the sun rose." Sign in to save TOEFL Quiz → IELTS Quiz → ← briefcase brilliance → Study tips featuring "brighten" Map Each Word Into a Connected Network Audit Your Own Writing for Lexical Resource Track How TOEFL Words Behave With Others Related words GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze SAT abnormal