무너지다

1. be pulled down; be torn down; be crumbled
For something piled up or standing high to be torn down or scattered.

2. collapse; fall down
For one's body to lose power, and then fall down or collapse.

3. collapse; fall apart
For an institution, social order, system, etc., to be destroyed

4. collapse; crumble; come apart
For one's power to diminish to nothing or for a country to be ruined.

5. crumble; come apart
For an idea or plant, etc., to come apart without being realized.

6. be heart-broken; be shattered
To lose a stable state of mind after suffering a sad affair, etc.

7. collapse; break
For a certain standard or mark to collapse or for a line to become unclear

8. crumble; vanish; fall apart
For a certain force, etc., to crumble or vanis

9. fall apart; break
For a certain form or state, etc., to fall apart or be broken.

10. lose
To lose in a sports game, etc.