License improperly without sound (7)
I believe the answer is:
silence
'without sound' is the definition.
I can't tell whether this definition defines the answer.
'license improperly' is the wordplay.
'improperly' is an anagram indicator (I've seen this in other clues).
'license' is an anagram of 'SILENCE'.
Can you help me to learn more?
(Other definitions for silence that I've seen before include "What's left of burnt coal" , "may be required in court" , "Quiet" , "Quietness" , "It is golden acccording to the 1960s song" .)