TOEFL IELTS definitely Definition Without doubt or hesitation; certainly. Example "She will definitely attend the conference next week." Sign in to save TOEFL PDF — $25 IELTS PDF — $25 ← definite definition → Study tips featuring "definitely" TOEFL Academic Vocabulary: Study by Topic Boost Your IELTS Writing With Precise Vocabulary 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