Sorry Republican felt urge for revolution! (9)

I believe the answer is:

regretful

I'm a little stuck... Click here to teach me more about this clue!

'sorry republican felt urge for revolution' is the definition.
I can't tell whether this defines the answer.

'sorry republican felt urge' is the wordplay.
'sorry' indicates anagramming the letters (sorry can mean poor-quality or wretched).
'republican' becomes 'r' (abbreviation).
'r'+'felt'+'urge'='rfelturge'
'rfelturge' anagrammed gives 'REGRETFUL'.

Can you help me to learn more?

(Other definitions for regretful that I've seen before include "Wishing something hadn't happened" , "Miss Otis was" , "penitent" , "Feeling sorry, repentant" , "Feeling guilt over something" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.