grandstand
Definitions
A principal seating area, typically roofed, for spectators at a racecourse or stadium.
To behave in a showy or ostentatious manner in an attempt to impress onlookers.
Examples
The spectators cheered loudly from the grandstand as the athletes crossed the finish line.
He was accused of grandstanding during the debate just to win favor with the voters.
Synonyms
show off play to the gallery posture pose flaunt parade boast
Antonyms
be humble act naturally be modest downplay understate be sincere