Fancy bishop does nothing with much passion (4,6)
I believe the answer is:
like blazes
'much passion' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'fancy bishop does nothing' is the wordplay.
'fancy' becomes 'like' (both can mean to find someone attractive).
'bishop' becomes 'B' (chess abbreviation).
'does nothing' becomes 'lazes' (I've seen this in another clue).
'like'+'b'+'lazes'='LIKE BLAZES'
'with' is the link.
Can you help me to learn more?
(Other definitions for like blazes that I've seen before include "A lot" , "furiously" , "Pyromaniacs do" , "What pyromaniac must do" .)