Synonyms for Swollen-headed (same or very similar meaning)
WordNet sense 1 (characteristic of false pride; having an exaggerated sense of self-importance):
conceited, egotistic, egotistical, swollen, vain, self-conceitedWordNet sense 2 (feeling self-respect or pleasure in something by which you measure your self-worth; or being a reason for pride):
proudFrom the ODE community, based on WordNetadd/edit