Mutableness of shifting bilaterality (12)
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.
Want a hint initially instead of a full solution?
Install my app