remorse
noun /rɪˈmɔːs/
  /rɪˈmɔːrs/
[uncountable]- the feeling of being extremely sorry for something wrong or bad that you have done
- I felt guilty and full of remorse.
 - She felt no remorse at leaving them without notice.
 - remorse for (doing) something He was filled with remorse for not believing her.
 
Wordfinder- amends
 - apologize
 - ashamed
 - embarrassed
 - forgive
 - regret
 - remorse
 - repent
 - sorry
 - sympathy
 
Extra Examples- He died without remorse.
 - He felt some remorse at his actions.
 - I suffered no remorse.
 - She felt a sharp pang of remorse over the incident.
 - She knew that the next day she would be full of remorse.
 - She was filled with remorse for the crime.
 
Oxford Collocations Dictionaryadjective- deep
 - genuine
 - great
 - …
 
- pang
 - stab
 
- be filled with
 - be full of
 - be overcome with
 - …
 
- without remorse
 - remorse at
 - remorse for
 - …
 
- buyer’s remorse
 - a feeling of remorse
 
Word Originlate Middle English: from Old French remors, from medieval Latin remorsus, from Latin remordere ‘vex’, from re- (expressing intensive force) + mordere ‘to bite’.