reg
ret
fu
lly
1
used to express a sense of sorrow or remorse
- Regretfully, we have to inform you that the event has been canceled due to unforeseen circumstances.
- Regretfully, the error in the report was not noticed until after its distribution.
- I regretfully informed them that the reservation had to be canceled due to unforeseen circumstances.
- She regretfully accepted that the project would need additional time to meet the desired quality standards.