The most common and most likely answer to this crossword clue is the 11 letter word ASSOCIATION
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More clues leading to the result ASSOCIATION
Buddy explains!
The straight part
We know that "Alliance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case alliance = association.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 ASSOCIATION mean?
ASSOCIATION noun- The act of associating.
- The state of being associated; a connection to or an affiliation with something.
- Any relationship between two measured quantities that renders them statistically dependent (but not necessarily causal or a correlation).
- A group of persons associated for a common purpose; an organization; society.
- Relationship between classes of objects that allows one object instance to cause another to perform an action on its behalf.