swellhead
Puffed-up egotist
A swellhead is someone with an inflated sense of their own importance—a conceited or arrogant person: Don't be such a swellhead just because you got promoted.
The image is of a head literally swelling with self-regard.
The adjective swellheaded describes this quality: He got swellheaded after his first success.
Excessively proud of oneself
- boastfulGiven to self-praise
- smugExcessively self-satisfied
- pompousAffectedly grand in manner
- egotisticalExcessively self-centered
vain · self-important · overbearing · haughty · bigheaded · cocky · puffed-up · full of oneself
One who flaunts achievements
- egotistSelf-absorbed person
- showboatOstentatious attention-seeker
- hotshotShowy, skilled person
- big shotInfluential, powerful person
prima donna · blusterer · peacock · stuffed shirt · snob · wise guy · hotdog · grandstander
conceited
Excessively proud of oneself
egotistical · vain · self-important · overbearing · haughty · bigheaded · cocky · puffed-up · full of oneself · narcissistic
braggart
One who flaunts achievements
big shot · prima donna · blusterer · peacock · stuffed shirt · snob · wise guy · hotdog · grandstander · self-promoter
swellheadshrinking violet
Extremely timid person
wallflower · nobody · underdog · doormat · milquetoast
swellheadhumble
Unassuming about oneself
modest · self-deprecating · unassuming · meek · wallflower
swellheadshrinking violet
Extremely timid person
wallflower · quiet type · introvert · humble servant · nobody