The council's enforcement powers in this situation are regrettably very limited.
From the thisisbristol.co.uk
Regrettably, Turkey saw an opportunity to put in motion its plans for partition.
From the economist.com
Regrettably, any global change is likely to be made at the speed of the slowest.
From the economist.com
Regrettably, this concept, which is in place in other communities, was rejected.
From the signonsandiego.com
King's hearings threaten, regrettably, to further strain whatever trust exists.
From the cnn.com
Well first, we'll give you the promotional poster, which is regrettably tasteful.
From the hecklerspray.com
Regrettably, when a game goes into a lull at this stage it can often be terminal.
From the telegraph.co.uk
Regrettably, the Senator's antiwar campaign is also based on hope, not reality.
From the time.com
He said Karadzic regrettably chose his course and now must face the consequences.
From the voanews.com
More examples
Unfortunately: by bad luck; "unfortunately it rained all day"; "alas, I cannot stay"
Deserving regret; "regrettable remarks"; "it's regrettable that she didn't go to college"; "it's too bad he had no feeling himself for church"
(Regrettable) Regrettables is an economic term to describe goods or services that do not add to utility themselves, but rather abate disutility. Examples would be health care, law enforcement and the justice system.