regretfully
Definitions
In a manner that expresses or feels sorrow, disappointment, or remorse.
Used to introduce a statement that one is sorry or unhappy to have to make.
Examples
Regretfully, the company had to announce that the event was cancelled due to unforeseen circumstances.
He looked at the broken vase and regretfully admitted that he had been playing ball in the living room.
Synonyms
sorrowfully remorsefully apologetically ruefully penitently sadly contritely
Antonyms
joyfully cheerfully gladly happily unapologetically delightedly triumphantly