1. failing completely or performing very poorly
Usage: informal
2. deliberately losing games or performing poorly to gain a strategic advantage
Usage: sports slang
3. declining rapidly in value or performance
Usage: informal

1. the act of failing completely or performing very poorly
Usage: informal

Examples

• The company’s stock is tanking after the scandal broke.
• The team was accused of tanking to get a better draft pick.
• His grades started tanking in his senior year.
• The movie is tanking at the box office.
• The tanking of the economy affected everyone.
• She’s tanking her math test on purpose.
• The restaurant’s reputation is tanking due to poor reviews.