A great deal (4)
(Other definitions for tons that I've seen before include "Loads (sl.)" , "Each is equivalent to 2240 pounds" , "Lots" , "A lot" .)
'a great deal' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lots that I've seen before include "a crowd?" , "Large numbers at auction" , "Loads" , "Something to draw" , "A great deal" .)
'a great deal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for often that I've seen before include "In many cases" , "on numerous occasions" , "Frequently, many times" , "A great deal" , "Quite frequently" .)