Made complaint: daemon on the loose (6)
I believe the answer is:
moaned
'made complaint' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'daemon on the loose' is the wordplay.
'on the loose' is an anagram indicator.
'daemon' with letters rearranged gives 'MOANED'.
Can you help me to learn more?
(Other definitions for moaned that I've seen before include "A demon (anag.)" , "Complained" , "Made low mournful sound as of pain" , "Made low sound of pain or distress" , "Made low sound of pain - or grumbled" .)