1. to refuse to obey or follow; to resist boldly
2. to challenge someone to do something difficult or impossible
3. to resist or withstand successfully

Examples

• The teenager decided to defy her parents’ curfew.
• The protesters continued to defy the government’s orders.
• I defy you to find a better pizza in this town.
• The ancient building seemed to defy the laws of physics.
• Her courage defied all expectations.
• The mountain climbers defied dangerous weather conditions.
• The students chose to defy the dress code policy.