With regret (5)
'with regret' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sadly that I've seen before include "Mournfully" , "Lamentably, unfortunately" , "With sorrow" , "I regret to say" , "Regrettably" .)
'with regret' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ruefully that I've seen before include "Contritely, remorsefully" , "With remorse or regret" , "In a wryly regretful way" , "In a regretful manner" , "In regretful or doleful way" .)