The most common and most likely answer to this crossword clue is the 10 letter word CEASE-FIRE
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Buddy explains!
The straight part
We know that "amicable settlement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case amicable settlement = cease-fire.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 CEASE-FIRE mean?
CEASE-FIRE noun- In warfare, an agreed end to hostilities for a specific purpose. (Typically only temporary).