In August one has enthusiasm (5)

I believe the answer is:
gusto
'enthusiasm' is the definition.
(gusto is a kind of enthusiasm)
'in august one has' is the wordplay.
'in' says the answer is hidden in the clue.
'GUSTO' can be found hidden inside 'august one has'.
(Other definitions for gusto that I've seen before include "Exuberant enjoyment" , "Zest, great enjoyment in doing" , "Relish; vigour" , "Great enthusiasm" , "exhilaration" .)