Listen out when there's no sound (6)
I believe the answer is:
silent
'no sound' is the definition.
Both the definition and answer are adjectives. Maybe there's an association between them I don't understand?
'listen out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'listen' anagrammed gives 'SILENT'.
'when there's' acts as a link.
Can you help me to learn more?
(Other definitions for silent that I've seen before include "Anagram of 7 Down" , "A continent" , "Mute" , "Strange and astonishing thing" , "Listen (anag.)" .)