1. spread from one part of the body to another (of cancer cells)
Usage: medical
2. spread harmfully or uncontrollably to other areas or situations
Usage: figurative

Examples

• The cancer had metastasized to her liver and lungs.
• Doctors discovered the tumor had metastasized beyond the original site.
• The corruption metastasized throughout the entire organization.
• What started as a small protest metastasized into citywide riots.
• The financial crisis metastasized from housing to banking sectors.
• Her fear of public speaking had metastasized into complete social withdrawal.