Invent or concoct (9)
I believe the answer is:
fabricate
I believe this is a double definition.
'invent' is the first definition.
(I know that invent can be written as fabricate)
'concoct' is the second definition.
(I know that fabricate is a type of concoct)
(Other definitions for fabricate that I've seen before include "Tell lies" , "Construct or invent" , "Invent or manufacture a story" , "Make up; manufacture" , "forge" .)