Indubitably

Adverb

 * 1) In a manner that leaves no possibility of doubt; undoubtedly.
 * 2) * 1871, Thomas Hardy, Desperate Remedies, ch. 18:
 * Now his first suspicion was indubitably confirmed.
 * 1) * 1907, William James, "Pragmatism: A New Name for Some Old Ways of Thinking":
 * The world is indubitably one if you look at it in one way, but as indubitably is it many, if you look at it in another. It is both one and many—let us adopt a sort of pluralistic monism.

Synonyms

 * undoubtably, unquestionably, doubtlessly, certainly, sure thing, without a doubt

Related terms

 * indubitable

Thesaurus
actually, admittedly, assuredly, beyond doubt, beyond question, by all odds, certainly, clearly, decidedly, demonstrably, dollars to doughnuts, doubtless, doubtlessly, for a certainty, for real, in all conscience, in all likelihood, in all probability, incontestably, indeed, indisputably, irrefragably, irrefutably, like enough, likely, manifestly, most likely, no doubt, noticeably, observably, obviously, out of question, patently, positively, presumably, presumptively, probably, quite, really, sensibly, seriously, ten to one, truly, unambiguously, undeniably, undoubtedly, unmistakably, unquestionably, verily, very like, very likely, visibly, without doubt

Etymology
indubitable: + -ly:

Translations

 * Chinese:
 * Dutch: ,
 * Finnish: epäilyksettä, epäilemättä, kiistattomasti
 * French:


 * German: unzweifelhaft
 * Icelandic: ótvíræðlega, óhrekjanlega
 * Russian: ,
 * Swedish: utan tvivel, otvivelaktigt