swellhead

Noun swellhead has 1 sense

• swellhead(n = noun.person) egoist, egotist - a conceited and self-centered person;
is a kind of disagreeable person, unpleasant person
has particulars: blowhard, boaster, braggart, bragger, line-shooter, vaunter, egomaniac, exhibitionist, show-off, know-all, know-it-all, megalomaniac, miles gloriosus, popinjay