Phony concerned with drinks after (9)
I believe the answer is:
insincere
'phony' is the definition.
(I've seen this in another clue)
'concerned with drinks after' is the wordplay.
'concerned with' becomes 'in re' (I've seen this in another clue).
'drinks' means one lot of letters goes inside another (inserted letters are consumed or drunk).
'after' becomes 'since' (since can mean after a certain time).
'inre' placed around 'since' is 'INSINCERE'.
(Other definitions for insincere that I've seen before include "may be laying it on" , "Hollow" , "Dissembling" , "is not ringing true" , "False, hypocritical" .)