adverb
unquestionably
uhn-KWEHS-chuhn-uh-blee
Unquestionably (adverb) means Without any doubt; certainly. Example: “She is unquestionably the best candidate for the job.”
adverb
1
Without any doubt; certainly.
"Mary Slessor wasn’t technically the first missionary to oppose twin killing in Calabar, but she was unquestionably the most effective and relentless."
— Segun Dukeh, Who Stopped the Killing of Twins in Nigeria? (2025)
"It is a strange fact, but it is unquestionably true that almost any English intellectual would feel more ashamed of standing to attention during “God save the King” than of stealing from a poor box."
— George Orwell, The Lion and the Unicorn (1941)
"She is unquestionably the best candidate for the job."
How to use unquestionably
Learner’s notesIn plain EnglishBeyond any doubt — clearly and certainly true.
Common pairings
unquestionably true
unquestionably the best
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Word forms
- Comparative
- more unquestionably
- Superlative
- most unquestionably
Fill the gap
Can you complete this real example?
She is _____ the best candidate for the job.
Etymology
From unquestionable + -ly.
Synonyms
View more →Related words
Rhymes for unquestionably
notably
probably
arguably
amicably
suitably
reliably
admirably
favorably
miserably
inexorably
reasonably
invariably
See all rhymes for unquestionably →
Frequently asked questions
What does “unquestionably” mean?
The word “unquestionably” means without any doubt; certainly. In plain terms, beyond any doubt — clearly and certainly true.
How do you pronounce “unquestionably”?
“Unquestionably” is pronounced uhn-KWEHS-chuhn-uh-blee (/ʌnˈkwɛs.t͡ʃən.ə.bli/ in IPA).
How do you use “unquestionably” in a sentence?
Here is “unquestionably” used in a sentence: “She is unquestionably the best candidate for the job.”
What part of speech is “unquestionably”?
“Unquestionably” is an adverb.
