Listen out for quiet (6)
I believe the answer is:
silent
'quiet' is the definition.
(similar in meaning)
'listen out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'listen' is an anagram of 'SILENT'.
'for' is the link.
(Other definitions for silent that I've seen before include "Without sound" , "Utterly quiet" , "Like early films" , "Enlist (anag) - mum" , "the moderate majority?" .)