There are several synonyms for the term "smug look" that can be used to describe someone who is feeling overly pleased or satisfied with themselves. One alternative is the term "self-satisfied," which describes someone who is gratified with their own achievements or qualities. Another option is to use the term "conceited," which suggests someone has an exaggerated sense of their own importance or abilities. Other alternatives include "arrogant," "self-important," and "smirk." These words all convey slightly different nuances, but they all describe someone who is feeling confident and perhaps a little too pleased with themselves.