'Presumably' definitions:

Definition of 'presumably'

From: WordNet
adverb
By reasonable assumption; "presumably, he missed the train" [syn: presumably, presumptively]

Definition of 'Presumably'

From: GCIDE
  • Presumably \Pre*sum"a*bly\, adv. In a presumable manner; by, or according to, presumption. [1913 Webster]

Synonyms of 'presumably'

From: Moby Thesaurus