Completely? To some extent! (5)
I believe the answer is:
quite
I believe this is a double definition.
'completely?' is the first definition.
(synonyms in phrases like 'are you quite done?')
'to some extent' is the second definition.
(thesaurus)
(Other definitions for quite that I've seen before include "Somewhat; completely" , "To a degree" , "Completely or entirely - be quiet" , "Somewhat; fully" , "Somewhat - I agree" .)