Hypertext Webster Gateway: "indubitably"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Indubitably \In*du"bi*ta*bly\, adv.
Undoubtedly; unquestionably; in a manner to remove all doubt.
Oracles indubitably clear and infallibly certain.
--Barrow.
From WordNet (r) 1.7 (wn)
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"
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