greatly
adverbUK /ˈɡreɪtli/
US /ˈɡreɪtli/
Very much.
I greatly enjoyed the birthday party.
OTHER MEANINGS
2. In a way that is important or serious.
The weather greatly affected our plans.
3. To a high degree; extremely.
She was greatly surprised by the gift.
4. With strong feeling or enthusiasm.
He greatly admired his teacher.