noun
a conceited and self-centered person
• Derivationally related forms: ↑egoistic (for: ↑egoist), ↑egoism (for: ↑egoist), ↑egotistic (for: ↑egotist), ↑egotistical (for: ↑egotist), ↑egotism (for: ↑egotist)
• Hypernyms: ↑unpleasant person, ↑disagreeable person
• Hyponyms:
↑bragger, ↑braggart, ↑boaster, ↑blowhard, ↑line-shooter, ↑vaunter, ↑egomaniac, ↑exhibitionist, ↑show-off, ↑know-it-all, ↑know-all, ↑megalomaniac, ↑miles gloriosus, ↑popinjay
* * *
—swellheaded, adj. —swellheadedness, n.
/swel"hed'/, n.
a vain or arrogant person.
[1835-45, Amer.; SWELL + HEAD]
Useful english dictionary. 2012.