'a great deal' definitions:

To a very great degree or extent; "I feel a lot better"; "we enjoyed ourselves very much"; "she was very much interested"; "this would help a great deal" [syn: a lot, lots, a good deal, a great deal, much, very much]

Frequently or in great quantities; "I don't drink much"; "I don't travel much" [syn: much, a great deal, often]