Main Entry: re·morse

Pronunciation: \ri-ˈmȯrs\

Function: noun

Etymology: Middle English, from Anglo-French remors, from Medieval Latin remorsus, from Late Latin, act of biting again, from Latin remordēre to bite again, from re- + mordēre to bite — more at mordant

Date: 14th century

1 : a gnawing distress arising from a sense of guilt for past wrongs : self-reproach
2 obsolete : compassion

synonyms see penitence