Bizarre; unreal (7)
I believe the answer is:
surreal
I believe this is a double definition.
'bizarre' is the first definition.
(I've seen this in another clue)
'unreal' is the second definition.
(similar in meaning)
(Other definitions for surreal that I've seen before include "Dreamlike; like Dali's art" , "RA rules (anag.)" , "Weird - like Dali's paintings?" , "Outlandish" , "Involving fantastical imagery" .)