Inventive or imaginative (8)
I believe the answer is:
creative
I believe this clue is a double definition.
'inventive' is the first definition.
(similar in meaning)
'imaginative' is the second definition.
(similar in meaning)
(Other definitions for creative that I've seen before include "Artistic, able to make new things" , "Showing originality" , "Inventive, artistic" , "Having the power to be original" , "Artistically inventive" .)