indubitably adv : in a manner or to a degree that could not be doubted; "it was immediately and indubitably apparent that I had interrupted a scene of lovers"
in a manner that leaves no possibility of doubt.
- 1871, Thomas Hardy,
Desperate Remedies, ch. 18,
- Now his first suspicion was indubitably confirmed.
- 1871, Thomas Hardy, Desperate Remedies, ch. 18,
- Oxford English Dictionary, 2nd ed., 1989.
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