Dash, flair (4)
I believe the answer is:
elan
This clue is a double definition.
'dash' is the first definition.
(I know that dash can be written as elan)
'flair' is the second definition.
(I know that flair can be written as elan)
(Other definitions for elan that I've seen before include "Snap" , "Stylish verve" , "French flair" , "Panache - ardour" , "Stylish enthusiasm" .)