Shameless (8)
I believe the answer is:
immodest
'shameless' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for immodest that I've seen before include "Lacking decency, shameless" , "Cheeky" , "Indecent or shameless, perhaps in dress" , "Swift proposal was not" , "Shamelessly indecent" .)