Female arbiters throwing out case? Sweet! (5)
I believe the answer is:
fudge
'sweet' is the definition.
(I know that fudge is a type of sweet)
'female arbiters throwing out case?' is the wordplay.
'female' becomes 'f' (abbreviation).
'arbiters' becomes 'judges' (people who arbitrate).
'throwing out case?' says to take the centre (the letters which encase the word are removed).
The middle of 'judges' is 'udge'.
'f'+'udge'='FUDGE'
(Other definitions for fudge that I've seen before include "Avoid, sweet" , "Soft sugary sweet" , "Very sweet confection" , "Soft buttery sweet" , "Adjust (figures) to meet desired result; sweet" .)