a great deal a great deal /ə ˈɡreɪt diːl/

adverb

1. () To a very great degree or extent  ( a good deal , lots , a great deal , a lot , much , very much )
   to a very great degree or extent
    I feel a lot better
   I feel a lot better
    We enjoyed ourselves very much
   we enjoyed ourselves very much
    She was very much interested
   she was very much interested
    This would help a great deal
   this would help a great deal
   
2. Frequently or in great quantities  ( a great deal , often , much )
   frequently or in great quantities
    I don't drink much
   I don't drink much
    I don't travel much
   I don't travel much