1. a performance or act so impressive that it interrupts the show with applause
Usage: theater; entertainment
2. something or someone that is extremely impressive or outstanding
Usage: informal
3. a critical problem that prevents progress or completion
Usage: business; informal

Examples

• Her solo dance number was the showstopper of the evening.
• The Broadway musical’s finale was an absolute showstopper.
• That red dress is a real showstopper at the party.
• The software bug turned out to be a showstopper for the product launch.
• His presentation was such a showstopper that the audience gave him a standing ovation.
• The technical issue became a showstopper that delayed the project for weeks.
• The singer’s powerful voice made every song a potential showstopper.