TOEFL unquestionably Definition without doubt or question; certainly. Example "She is unquestionably the most talented musician in the ensemble." Sign in to save TOEFL PDF — $25 ← unpromising unquestioning → Study tips featuring "unquestionably" TOEFL Academic Vocabulary: Study by Topic 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