Liquor is seen — cries of disapproval are heard (5)
I believe the answer is:
booze
'liquor' is the definition.
(I know that liquor can be written as booze)
'disapproval are heard' is the wordplay.
'disapproval' becomes 'boos' (a boo is a sound of disapproval).
'are heard' shows a homophone (sound like).
'boos' is a homophone of 'BOOZE'.
'is seen cries of' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for booze that I've seen before include "Drink heavily" , "Drink alcohol" , "Alcohol (sl.)" , "Intoxicating liquor" , "sauce" .)