Style, flair (4)
I believe the answer is:
elan
This clue is a double definition.
'style' is the first definition.
(I know that style 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 "Dashing style" , "Style and verve" , "Vigour, panache" , "Stylish elegance" , "Verve and dash" .)