Word
unquestionable
Phoneticsun·ques·tion·able
US/ənˈkwɛstʃənəbəɫ/
UK/ʌnkwˈɛstʃənəbəl/
Definition
adj. so clear or true that nobody can doubt it. You use it when something is certain or someone is clearly honest or skilled.
adj. incapable of being doubted or disputed; accepted as certainly true or valid. Typically modifies evidence, authority, skill, or moral qualities.
Examples
“Her honesty is unquestionable to everyone here.”
“The doctor's skill is unquestionable after twenty years of successful operations.”
“The archive provides unquestionable proof of the treaty, with signed letters that leave historians no room for doubt.”
Examples
simple
“Her honesty is unquestionable to everyone here.”
contextual
“The doctor's skill is unquestionable after twenty years of successful operations.”
complex
“The archive provides unquestionable proof of the treaty, with signed letters that leave historians no room for doubt.”
Collocations
Common phrases and expressions where native English speakers use the word “unquestionable” in context.
Verb
01. accept as unquestionable
“We cannot simply accept these statistics as unquestionable without checks.”
verb + prep + adj
02. consider unquestionable
“Most historians consider his expertise on ancient Rome unquestionable.”
verb + adj
03. prove unquestionable
“The DNA results proved unquestionable in confirming his innocence.”
verb + adj
04. recognize as unquestionable
“The court recognized the document's authenticity as unquestionable.”
verb + prep + adj
05. regard as unquestionable
“His followers regard his moral leadership as unquestionable.”
verb + prep + adj
Noun
06. of unquestionable importance
“Regular exercise is a habit of unquestionable importance for health.”
prep + adj + noun
07. of unquestionable quality
“The company delivers products of unquestionable quality and durability.”
prep + adj + noun
08. of unquestionable value
“This archive holds documents of unquestionable value to researchers.”
prep + adj + noun
09. a leader of unquestionable authority
“She emerged as a leader of unquestionable authority during the crisis.”
10. a person of unquestionable integrity
“The charity needs a person of unquestionable integrity to manage its funds.”
11. a reputation for unquestionable honesty
“Over decades, he built a reputation for unquestionable honesty in business.”
12. evidence of unquestionable value
“The study provides evidence of unquestionable value for policymakers.”
Real-World Examples
“Polis is jam-packed with information: The amount of material is encyclopedic, and Ma’s expertise is unquestionable.” “He says he has appointed Christopher Kourakis because he was “unquestionable integrity”, “impartiality” and “unfavouring fidelity to the rule of law”.” Etymology
From un- + question + -able, compare questionable.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Synonyms
Antonyms
Word family
ADJECTIVE
ADVERB
Related words
- 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.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL 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: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Occasional
- Level
- C1 · Advanced
- Updated
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englishreference.com/q/unquestionable