1 : to make a light less bright or to become less bright
[+ object]
- Dim the lights.
- The car’s headlights were dimmed.
[no object]
2 : to make something less strong or clear or to become less strong or clear
[+ object]
- The latest setback has dimmed hopes of an early settlement.
[no object]
- Hopes of an early settlement have dimmed.
- Her beauty dimmed rapidly.