Considerably; greatly; a lot—an adverb expressing a fairly large degree or amount.
だいぶ寒くなってきたのでコートを出した。
It's gotten considerably colder, so I took out my coat.
傷はだいぶ良くなったが、まだ注意が必要だ。
The wound has improved a lot, but it still needs care.
だいぶ前に申し込んだはずだけど、まだ連絡が来ない。
I should have applied quite a while ago, but I still haven't heard back.