Strikingly unusual (6)
I believe the answer is:
exotic
'strikingly unusual' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for exotic that I've seen before include "Colourful or unusual, perhaps from abroad" , "Strikingly different or colourful" , "Bizarre" , "Interestingly different or strange" , "From far abroad" .)