undeniably

undeniably — adverb

1. used to emphasize that something is so clearly true that nobody could reasonably

1.adverbB2
Definition

used to emphasize that something is so clearly true that nobody could reasonably disagree with it

Example

Noor's singing voice was undeniably beautiful, filling the whole concert hall with emotion.

pattern: undeniably + adjective (beautiful, strong, moving)

The prosecutor's evidence was undeniably strong, and the jury reached a quick verdict.

Common collocations
  • undeniably true
  • undeniably beautiful
  • undeniably important
  • undeniably improved
  • undeniably powerful
Synonyms
Antonyms
  • debatably

    suggests the opposite — open to disagreement

Grammar Patterns

undeniably + adjective

undeniably + past participle

Undeniably, + [clause]

Usage Note

Often placed directly before the adjective or verb it modifies (e.g., undeniably true, undeniably improved). It can also begin a sentence as a sentence adverb: 'Undeniably, the results speak for themselves.'

Common Mistakes

His argument is undeniably.
His argument is undeniably strong.
undeniably is an adverb and must modify an adjective, verb, or clause; it cannot stand alone as a predicate.

Word family

  • deny
    verbB1
  • denial
    nounB2
  • deniable
    adjectiveC1
  • undeniable
    adjectiveB2

Synonym discussion

Sense: adverb/1

Undeniably, undoubtedly, indisputably, and unquestionably all express strong certainty, but their nuances differ. Undeniably emphasizes that something cannot be logically denied — the truth is so obvious that denial would be irrational. Undoubtedly focuses more on the speaker's personal conviction than on external proof. Indisputably carries the strongest factual weight, suggesting the matter has been settled by evidence. Unquestionably is close to undoubtedly but implies that even asking questions would be pointless. Certainly is the most common and least emphatic of the five, used for simple assertions. Choose undeniably when you want to stress that the truth is self-evident and that disagreeing would be unreasonable.

undoubtedly ↗indisputablyunquestionablycertainly ↗

Common collocations

Adverbs

  • absolutely undeniably

Phrases

  • undeniably true
  • undeniably beautiful
  • undeniably important

Etymology

LatinFrenchEnglish

The adverb undeniably is formed by adding -ly to the adjective undeniable, which combines the prefix un- (meaning 'not') with deniable ('able to be denied'). The root goes back to Latin denegare, meaning to say no or refuse, formed from de- (away) and negare (to say no).