Create; make up (6)
I believe the answer is:
invent
This clue is a double definition.
'create' is the first definition.
(I've seen this in another clue)
'make up' is the second definition.
(I know that make up can be written as invent)
(Other definitions for invent that I've seen before include "Think up, create" , "Be the first person to make something" , "Discover Devise, concoct" , "Create like Edison" , "Make up (something false)" .)