Supervisor to flounder to some extent? To some extent (4,2)
I believe the answer is:
sort of
'to some extent' is the definition.
(thesaurus)
'supervisor to flounder to some extent?' is the wordplay.
'to some extent?' says the answer is hidden in the clue (I've seen 'to some extent' mean this).
'SORT-OF' is hidden within 'supervisor to flounder'.
(Other definitions for sort of that I've seen before include "Not exactly" , "Possibly, to an extent" , "To some (great or small) extent" , "in a way" , "Somewhat" .)