Fast getting one element or another (11)
I believe the answer is:
quicksilver
'another' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?
'fast getting one element' is the wordplay.
'fast' becomes 'quick' (similar in meaning).
'getting' means one lot of letters go next to another.
'one element' becomes 'silver' (silver is an element).
'quick'+'silver'='QUICKSILVER'
'or' acts as a link.
Can you help me to learn more?
(Other definitions for quicksilver that I've seen before include "Liquid mercury" , "Element of dentistry" , "so rapid" , "Mercury - volatile" .)