con ‧ sid ‧ er ‧ a ‧ bly S3 AC /kənˈsɪd ə rəbli/ BrE AmE adverb
[ Word Family: adjective : ↑ considerable ≠ ↑ inconsiderable , ↑ considerate ≠ ↑ inconsiderate , ↑ considered ; verb : ↑ consider , ↑ reconsider ; noun : ↑ consideration , ↑ reconsideration ; adverb : ↑ considerably , ↑ considerately ≠ ↑ inconsiderately ]
much or a lot:
It’s considerably colder today.
Conditions have improved considerably over the past few years.