Make, cause to exist (6)
I believe the answer is:
create
I believe this is a double definition.
'make' is the first definition.
(I know that make is a kind of create)
'cause to exist' is the second definition.
(I've seen this in another clue)
(Other definitions for create that I've seen before include "Devise" , "Concoct" , "Be the first to make (a fuss?)" , "found" , "Build" .)