regretfully
regretfully Lexical Profile
regretfully Game Scores & Validity
• adverb
In a manner that feels or expresses sorrow, remorse, or disappointment over something that has happened or been done.
"She smiled regretfully and explained that she had already committed to another project."
Used to express that a situation or fact is unfortunate, undesirable, or to be regretted.
"Regretfully, we are unable to offer you a position at our firm at this time."
Word Nuance & Usage
Traditionally, "regretfully" means in a manner full of personal remorse or sorrow (e.g., "He shook his head regretfully"), whereas "regrettably" is used as a sentence adverb meaning "it is unfortunate that" (e.g., "Regrettably, the event was canceled"). In modern usage, however, "regretfully" is frequently used in place of "regrettably," though formal style guides still recommend maintaining the distinction.