Celebrated in bar till drunk (9)
I believe the answer is:
brilliant
'celebrated' is the definition.
(thesaurus)
'in bar till drunk' is the wordplay.
'drunk' indicates anagramming the letters.
'in'+'bar'+'till'='inbartill'
'inbartill' anagrammed gives 'BRILLIANT'.
(Other definitions for brilliant that I've seen before include "Very bright; marvellous" , "Very bright or exceptionally talented" , "Very bright or vivid" , "Excellent; a diamond" , "Superb" .)