'Considerably' definitions:

Definition of 'considerably'

(from WordNet)
adverb
To a great extent or degree; "I'm afraid the film was well over budget"; "painting the room white made it seem considerably (or substantially) larger"; "the house has fallen considerably in value"; "the price went up substantially" [syn: well, considerably, substantially]

Definition of 'Considerably'

From: GCIDE
  • Considerably \Con*sid"er*a*bly\, adv. In a manner or to a degree not trifling or unimportant; greatly; much. [1913 Webster]
  • The breeds . . . differ considerably from each other. --Darwin. [1913 Webster]

Synonyms of 'considerably'

From: Moby Thesaurus