Ungainly slice from fine leg antagonises (9)
I believe the answer is:
inelegant
'ungainly' is the definition.
(I've seen this before)
'slice from fine leg antagonises' is the wordplay.
'slice' indicates the answer is hidden within the clue (I've seen 'slice of' mean this).
'INELEGANT' is hidden within 'from fine leg antagonises'.
(Other definitions for inelegant that I've seen before include "less than couth" , "Not stylish or refined" , "not the cultivated sort" , "Unpolished" , "gauche" .)