regretfully, i walked away from my one chance to be a star.
Regretfully Yours was created in 1996.
'We regretfully advise you...' or 'We regret to advise you...' would be correct versions of your example.
It looks clumsy and overdone. Simply use regret.
fretfully
Apologetically or remorsefully.
Yes it is.
REGRETFULLY is the correct spelling.
McCandless regretfully calls the discovery of his father's affair one of the greatest tragedies of his life.
Regretfully. Filled with regret.
Rosie noted regretfully that Bob's worst characteristic was his lack of adaptability--he wouldn't even consider a wedding in Antarctica!
Regretfully, no.