1. falling down or inward suddenly; breaking down structurally
Usage: present participle of collapse
2. failing completely; breaking down in function or organization
Usage: present participle of collapse
3. suddenly losing strength or consciousness; fainting
Usage: present participle of collapse

1. designed to fold down or be compressed for storage

Examples

• The old building is collapsing after years of neglect.
• The economy was collapsing during the recession.
• She felt herself collapsing from exhaustion.
• We bought a collapsing table for the camping trip.
• The bridge started collapsing under the weight of traffic.
• His business empire was slowly collapsing.
• The runner was collapsing at the finish line.