Narcissistic (4)

I believe the answer is:
vain
'narcissistic' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for vain that I've seen before include "Having too much pride in one's appearance" , "Conceited and ineffectual" , "Conceited - or a waste of time" , "Concieted or pointless" , "is full of himself" .)