Wonderful, fantastic (5)
I believe the answer is:
great
I believe this is a double definition.
'wonderful' is the first definition.
(I know that wonderful can be written as great)
'fantastic' is the second definition.
(fantastic can mean great or excellent)
(Other definitions for great that I've seen before include "Large, important" , "Large, fantastic" , "Extensive; excellent" , "Large; fine" , "Brunel's third and last steamship" .)