Excessively pleased with oneself (4)

I believe the answer is:

smug

(Other definitions for smug that I've seen before include "Unpleasantly complacent" , "Self-satisfied and vain" , "Self-satisfied, complacent" , "Prim" , "goody-goody" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.