TOEFL IELTS undoubtedly Definition Without doubt; certainly. Example "She is undoubtedly the most qualified candidate for the position." Sign in to save TOEFL PDF — $25 IELTS PDF — $25 ← undo undue → Study tips featuring "undoubtedly" 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