Definition of "undeniably"

undeniably

adverb
comparative more undeniably, superlative most undeniably
1. In an undeniable manner, or to an undeniable extent.
  Quotations
  [A]nd gaunt though his figure, and far from elegant though his dressing-robe, there was that about him which spoke undeniably of the grand seigneur— [...]
  1853, Pisistratus Caxton [pseudonym; Edward Bulwer-Lytton], chapter III, in “My Novel”; Or Varieties in English Life […], volume III, Edinburgh, London: William Blackwood and Sons, book tenth, page 115
  It created inter-city and intermodal services, which were genuinely world leading. And it undeniably pushed British Railways into the modern era.
  2023 March 8, Gareth Dennis, “The Reshaping of things to come...”, in RAIL, number 978, page 49
2. Used as a modal adverb to assert that that the indicated statement is undeniable.