1. never done or known before; having no previous example

Examples

• The company achieved unprecedented growth this quarter.
• The hurricane caused unprecedented damage to the coastal region.
• Her success at such a young age was unprecedented in the field.
• The government took unprecedented measures to address the crisis.
• The team's winning streak was unprecedented in league history.
• Scientists observed unprecedented changes in the climate data.
• The concert drew an unprecedented crowd of over 100,000 people.