Antelope endlessly shows style (4)
I believe the answer is:
elan
'style' is the definition.
(I know that style can be written as elan)
'antelope endlessly' is the wordplay.
'antelope' becomes 'eland' (eland is a kind of antelope).
'endlessly' means to remove the last letter.
'eland' with its last letter taken away is 'ELAN'.
'shows' acts as a link.
(Other definitions for elan that I've seen before include "Combination of style and vigour" , "French verve" , "Verve and dash" , "Panache - ardour" , "Energetic style - anagram of 3" .)