The most common and most likely answer to this crossword clue is the 8 letter word VARIANCE
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More clues leading to the result VARIANCE
Buddy explains!
The straight part
We know that "Alteration" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case alteration = variance.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 VARIANCE mean?
VARIANCE noun- The act of varying or the state of being variable.
- A difference between what is expected and what is observed; deviation.
- The state of differing or being in conflict.
- An official permit to do something that is ordinarily forbidden by regulations.
- A discrepancy between two legal documents.
- A departure from a cause of action originally in a complaint.
- The second central moment in probability.
- The number of degrees of freedom in a system.
- Covariance and contravariance generally.