Bloody remarkable! (4)
I believe the answer is:
rare
I believe this is a double definition.
'bloody' is the first definition.
(I've seen this before)
'remarkable' is the second definition.
(thesaurus)
(Other definitions for rare that I've seen before include "few and far between" , "Ben Jonson was considered so" , "thin on the ground" , "Seldom encountered" , "Excellent; uncommon" .)