1. spreading from one part of the body to another (used of cancer cells)
Usage: medical
2. spreading rapidly and uncontrollably to other areas or contexts
Usage: figurative

Examples

• The cancer was metastasizing to her liver and lungs.
• Doctors were concerned about the tumor metastasizing before treatment could begin.
• The corruption was metastasizing throughout the entire organization.
• Social media rumors were metastasizing faster than officials could respond.
• The economic crisis was metastasizing from one sector to another.
• They needed to stop the problem from metastasizing into other departments.