Drinking spirit after vocal disapproval (7)

I believe the answer is:

boozing

I'm a little stuck... Click here to teach me more about this clue!

'drinking' is the definition.
(I know that drinking can be written as boozing)

'spirit after vocal disapproval' is the wordplay.
'spirit' becomes 'zing' (I've seen this before).
'after' is a charade indicator (letters next to each other).
'vocal disapproval' becomes 'boo' (as in a crowd booing. I am not sure about the 'vocal' bit.).
'zing' put after 'boo' is 'BOOZING'.

Can you help me to learn more?

(Another definition for boozing that I've seen is " Drinking a lot".)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.