Wild corgi out drinking wine (9)
I believe the answer is:
orgiastic
'wild' is the definition.
(thesaurus)
'corgi out drinking wine' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'drinking' means one lot of letters goes inside another.
'wine' becomes 'asti' (I've seen this before).
'corgi' is an anagram of 'orgic'.
'orgic' enclosing 'asti' is 'ORGIASTIC'.
(Other definitions for orgiastic that I've seen before include "Debauched" , "Licentious" , "become overindulgent" .)