1. Someone who deliberately behaves in such a way as to attract attention
   "The show-off performed a series of unnecessary stunts on his skateboard";
   - exhibitionist, showboat [N. Amer, informal]

1. Display proudly; act ostentatiously or pretentiously
   "he showed off his new sports car";
   - flaunt, flash [informal], ostentate [archaic], swank [informal], flex [N. Amer, informal], showboat [N. Amer, informal], parade

Derived forms: show-offs, showed off, showing off, shown off, shows off

Type of: display, egoist, egotist, exhibit, expose, swellhead [N. Amer, informal]