The most common and most likely answer to this crossword clue is the 4 plus 3 plus 7 letter word BURY THE HATCHET
I've seen this crossword clue in The Daily Telegraph
B
U
R
Y
T
H
E
H
A
T
C
H
E
T
More clues leading to the result BURY THE HATCHET
- Stop fighting that butchery he spread
- Ground the chopper, conflict being over
- End hostilities but conceal evidence of murder weapon?
- Floundering, but they reach almost the end row
- Stop fighting, polish up still, hiding where the drink goes
- “Lay to rest”, he interrupts ex-PM briefly. “Time to stop the war”
- What to do when no longer having an axe to grind?
- Be an axe murderer — or make peace?
- Chat by hut there in order to end a dispute
- Butchery that he set in motion, should we forget and forgive?
Buddy explains!
The straight part
We know that "What to do when no longer having an axe to grind" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case what to do when no longer having an axe to grind = bury the hatchet.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.