Four moving about, causing uproar (6)
I believe the answer is:
furore
'uproar' is the definition.
(synonyms)
'four moving about' is the wordplay.
'moving' is an anagram indicator (letters are moved around).
'about' becomes 're' ('re' means regarding or about).
'four' is an anagram of 'furo'.
'furo'+'re'='FURORE'
'causing' is the link.
(Other definitions for furore that I've seen before include "Disturbance" , "Noisy state of wild confusion" , "To-do" , "Frenzied excitement, uproar" , "Wild excitement; craze" .)