Female with whip showing off (5)
I believe the answer is:
flash
'showing off' is the definition.
(flash can mean fancy or showing off)
'female with whip' is the wordplay.
'female with' becomes 'f' (I've seen this in other clues).
'whip' becomes 'lash' (synonyms).
'f'+'lash'='FLASH'
(Other definitions for flash that I've seen before include "Short gleam of light" , "Mo" , "Tasteless" , "- - of lightning" , "Ostentatiously stylish" .)