The most common and most likely answer to this crossword clue is the 8 letter word CONTRITE
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More clues leading to the result CONTRITE
- Penitent half continued with ceremony
- Common criminal initially sorry
- Apologetic but right to stop idiot wearing item stolen by student?
- Remorseful prisoner — first one in the religious ceremony
- Sorry — the prisoner’s worn out
- Worn out by constant working – sorry!
- Prisoner worn out becomes repentant
- Uninspired by prisoner becoming full of remorse
- Prisoner worn out feeling sorry for offence
- Do time with form getting remorseful
Buddy explains!

The straight part
We know that "regret" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case regret = contrite.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CONTRITE mean?
CONTRITE noun- A contrite person; a penitent.
- Sincerely penitent or feeling regret or sorrow, especially for one’s own actions; apologetic.
- Thoroughly bruised or broken.