Found 2 items, similar to presumptively.
English → English (WordNet) Definition: presumptively presumptively adv : by reasonable assumption; “presumably, he missed the train” [syn: presumably]
English → English (gcide) Definition: Presumptively Presumptively \Pre*sump"tive*ly\, adv. By presumption, or supposition grounded or probability; presumably. [1913 Webster]