To grandstand means to show off or act in an exaggerated way to impress people who are watching. A player who grandstands might make a simple catch look incredibly dramatic, adding unnecessary flips or gestures because they know the crowd is watching.

You see grandstanding in everyday life too. A student who already knows the answer might wave their hand wildly and make a big show of how eager they are to respond. A teammate might take credit for a group project in front of the teacher, acting like they did all the work. Someone grandstanding cares more about looking good than about the actual task at hand.

The word has a critical edge to it. When you say someone is grandstanding, you're suggesting their performance is hollow or insincere. They're playing to the audience rather than focusing on what really matters. A politician accused of grandstanding might be giving a dramatic speech not to solve a problem but to get applause and attention.

As a noun, a grandstand is a large set of seats, usually outdoors, where spectators sit to watch a game, race, or other event.

People often notice when someone cares more about the spotlight than the substance.