Presume
Definition 1 of 4
Pro Tip 1/3
Uncertain Belief
Use 'presume' to express a belief when you're not completely sure, but have some reasons. I can cancel my trip, as I presume the conference will be postponed.
Pro Tip 2/3
Not Confirm
'Presume' generally doesn't require evidence, unlike 'prove' or 'confirm'. We presume she’s coming, though she hasn’t confirmed.
Pro Tip 3/3
Suggest Diplomacy
Use 'presume' to sound more polite and less assertive than saying 'assume'. I presume you've finished the project, or is there more to do?