presumably
adverb
[ prɪˈzjuːməbli ]
• used to convey that what is asserted is very likely though not known for certain.
• "it was not yet ten o'clock, so presumably the boys were still at the pub"
Similar:
I assume,
I expect,
I believe,
I presume,
I take it,
I suppose,
I imagine,
I dare say,
I would have thought,
it is to be presumed,
I guess,
in all probability,
probably,
in all likelihood,
all things being equal,
all things considered,
as likely/like as not,
doubtless,
undoubtedly,
no doubt,
without doubt,
on the face of it,
apparently,
seemingly,