Heaps, loads (6)
I believe the answer is:
oodles
I believe this is a double definition.
'heaps' is the first definition.
(synonyms)
'loads' is the second definition.
(oodles informally means a lot of something)
(Other definitions for oodles that I've seen before include "Very great amount (colloq.)" , "A lot" , "Large number or amount" , "Bags" , "Very many, lots" .)