English Reference

Word

unquestionably

Phoneticsun·ques·tion·ably

US/ənˈkwɛstʃənəbɫi/

UK/ʌnkwˈɛstʃənəbli/

Sentence adverb

Definition

adv. without any doubt at all. You use this to show that something is definitely true and nobody can argue with it.

adv. used to emphasize that a statement is completely true or that a quality is undeniable. Often functions as a sentence-modifying disjunct to express the speaker's certainty.

Examples

“She is unquestionably the best player on the team.”

“The new safety regulations are unquestionably a step in the right direction for the industry.”

“While some critics found the plot predictable, the lead actor's performance was unquestionably the highlight of the production, earning him a standing ovation.”

Examples

simple

“She is unquestionably the best player on the team.”

contextual

“The new safety regulations are unquestionably a step in the right direction for the industry.”

complex

“While some critics found the plot predictable, the lead actor's performance was unquestionably the highlight of the production, earning him a standing ovation.”

Usage

Typically placed before the adjective it modifies or at the beginning of a clause to emphasize the speaker's stance.

Real-World Examples

“And while he is unquestionably a “builder”, so much of that work was simultaneous with his career as a player.”
The Guardian 10 Sept 2026
“It leaves Root as unquestionably the man in charge.”
BBC News 26 Aug 2026

Etymology

From unquestionable + -ly or un- + question + -ably.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADVERB

unquestionably(B2)

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Occasional
Level
B2 · Upper Intermediate
Updated

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English Reference