Highly decorative (6)
I believe the answer is:
ornate
'highly decorative' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ornate that I've seen before include "Richly decorated, perhaps too much so" , "Florid" , "Highly embellished" , "Richly or elaborately decorated" , "Highly decorated" .)