1. a very large or spectacular failure, especially of a movie, product, or public event
Usage: informal; often used in entertainment and business contexts

Examples

• The studio's $200 million superhero film turned out to be a megaflop, losing money at the box office.
• After months of hype, the new smartphone launch was a megaflop due to technical problems.
• Critics called the concert a megaflop when the star canceled at the last minute.
• The company's megaflop in the market forced them to restructure their entire division.
• That restaurant opening was a megaflop—it closed within three months.