Unusual, weird (7)
I believe the answer is:
bizarre
I believe this is a double definition.
'unusual' is the first definition.
(thesaurus)
'weird' is the second definition.
(synonyms)
(Other definitions for bizarre that I've seen before include "Off-the-wall" , "Outr*" , "Weird and wonderful" , "Freakish" , "Very strange" .)