One came in through your own room, noting, of course, your absence, let in his friend below, and tore up the place regrettably.
"The House of a Thousand Candles"
Meredith Nicholson
This retirement imposes a regrettably necessary decision on the President of the Republic and the Government.
"Fighting France"
Stephane Lauzanne
For example, when Tom says "There must always be some blackguards," he means "regrettably there will always be blackguards," not "We ought to have some blackguards".
"Tom Brown at Oxford"
Thomas Hughes