rueful
— Adjective
– English
~ feeling or expressing pain or sorrow for sins or offenses
ruefully
— Adverb
– English
~ in a rueful manner; "`I made a big mistake,' he said ruefully"
ruefulness
— Noun
– English
~ sadness associated with some wrong done or some disappointment; "he drank to drown his sorrows"; "he wrote a note expressing his regret"; "to his rue, the error cost him the game"
ruf
— Noun
– English
~ a terrorist group formed in the 1980s in Sierra Leone; seeks to overthrow the government and gain control of the diamond producing regions; responsible for attacks on civilians and children, widespread torture and murder and using children to commit atrocities; sponsored by the president of Liberia