Extraordinary, outstanding (10)
I believe the answer is:
phenomenal
I believe this is a double definition.
'extraordinary' is the first definition.
(similar in meaning)
'outstanding' is the second definition.
(thesaurus)
(Other definitions for phenomenal that I've seen before include "Remarkable" , "Extraordinary - help one man (anag)" , "Incredible" , "Mind-blowing" , "Exceptionally good" .)