TOEFL IELTS grin Definition A broad smile, often showing pleasure or amusement. Example "The child had a wide grin after winning the game." Sign in to save TOEFL Quiz → IELTS Quiz → ← grimace grind → Study tips featuring "grin" 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