Infrequent cop raids disrupted (8)
I believe the answer is:
sporadic
'infrequent' is the definition.
(associated in meaning)
'cop raids disrupted' is the wordplay.
'disrupted' indicates anagramming the letters.
'cop'+'raids'='copraids'
'copraids' with letters rearranged gives 'SPORADIC'.
(Other definitions for sporadic that I've seen before include "Occasional - intermittent" , "Occurring infrequently" , "Having separate patches" , "Fitful, intermittent" , "Picadors being scattered, here and there" .)