Revolution of Cologne University fast and furious (9)
I believe the answer is:
turbulent
'furious' is the definition.
(thesaurus)
'revolution of cologne university fast' is the wordplay.
I cannot quite see how this works, but
'university' could be 'u' (abbreviation for university) and 'u' is found within the answer.
'fast' could be 'lent' (Lent is a period of fasting in Christianity) and 'lent' is located in the answer.
This explanation may well be incorrect...
'and' is the link.
Can you help me to learn more?
(Other definitions for turbulent that I've seen before include "Troublesome" , "describing Becket as priest?" , "Stormy" , "Tumultuous" , "raging" .)