probably, in all likelihood, (very or most) likely, in all probability, seemingly, doubtless(ly), indubitably, no doubt, undoubtedly, unquestionably, without a doubt, surely, certainly, on the face of it, all things considered, all things being equal:
Presumably, you have heard the one about the colonel's poodle.
Advanced English Dictionary
+adverb used to say that you think that sth is probably true: Presumably this is where the accident happened. + You'll be taking the car, presumably? + I couldn't concentrate, presumably because I was so tired.
Random quote: The world cares very little about what a man or woman knows; it is what a man or woman is able to do that counts.: Booker Washington