Crossword Genius

Mutableness of shifting bilaterality (12)

Ross

I believe the answer is:

alterability

'mutableness' is the definition.
(alterability is a kind of mutableness)

'shifting bilaterality' is the wordplay.
'shifting' is an anagram indicator.
'bilaterality' with letters rearranged gives 'ALTERABILITY'.

'of' is the link.

I've seen this clue in The Telegraph.
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