regrettablere‧gret‧ta‧ble /rɪˈɡretəbəl/ adjective 
- Any job losses are regrettable.
- It's regrettable that we can't go in June when the weather is best.
- For a regrettable number, emotional instability and spiritual confusion remain long after the physical bruises have faded.
- Neither welcomed the presence of the city's poor, the majority of its population, though both recognised their regrettable necessity.
- Shortly after his father died the new Earl said how regrettable it was that he had died alone.
- The departure of Richard Wilcock and his staff was equally regrettable.
- The latest shortfall, for 1993-94, caused by yet more Republican mischief-making, is regrettable.
- The whole business was regrettable but not beyond redemption.
- There was regrettable delay in serving it and it should have been served personally on Mr. Butler in prison.
something that you wish had not happened or was not true► unfortunate · Parents are so busy with their careers that they don't have time to have fun with their children, and that's unfortunate.unfortunate circumstances/event/situation etc · "It was an unfortunate set of circumstances that no one could have predicted," a spokesperson said today.
► regrettable formal something that is regrettable makes you feel sorry because it has unpleasant results: · "This is an unfortunate and extremely regrettable incident," the minister told a newspaper.· It was decided by the authorities that the building of the dam across the valley was a "regrettable necessity".
adjectiveregrettableregretfuladverbregrettablyregretfullynounregretverbregret
This was a very regrettable error.it is regrettable that