Drunk not willing to buy everyone drinks? (5)
I believe the answer is:
tight
'drunk' is the definition.
(slang term)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tight that I've seen before include "Secretive, drunk (colloq.)" , "Rigid; drunk" , "Trim" , "Close-fitting; cramped; mean" , "Penny-pinching" .)