regrettably

regrettable | American Dictionary

regrettable
adjective
us/rɪˈɡret̬·ə·bəl/
causing or deserving sadness or disappointment:
The omission of a sponsor’s name on the program was a regrettable error.

regrettably

adverbus/rɪˈɡret̬·ə·bli/
Regrettably, he died before he could see her again.

Examples of regrettable

regrettable
Although this is a matter of editing rather than content, it is nevertheless regrettable.
It is also regrettable that there are no notes on the contributors and their institutional affiliations.
This is interesting, and makes it regrettable that 'there has been little productive interaction between music theory and prosodic theory'.
It is regrettable that he did not allow himself to drift a bit more from his historian's mooring in documents.
They are simply nonexistent in her book, a total cultural omission leaving a regrettable hole in the social tapestry she attempts to weave.
It is permissible to doubt whether the encouragement of the labour contract system by statute is not mainly responsible for this regrettable state of affairs.
It is regrettable to have to report that errors such as those described above can be found on dozens of pages of this book.
At this point, it is important to acknowledge the often regrettable or painful consequences of our decision, along with the expected benefits.
However, it is regrettable that he does not show any direct connection between this exploitation and the rebels.
This is regrettable because bioinformatics is now also big business.
It is regrettable that the edited texts reflect the relative distance that the compilers seem to have gained in the meantime from their subject-matter.
It is regrettable that these debates have not hitherto involved wider bands of the historiographical spectrum.
The great discrepancies in the bibliographic apparatuses are also regrettable.
It was regrettable that the histopathological illustrations could not have been in colour.
If the authors are correct, then this is highly regrettable.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.