Agreeable school paid off (5)
I believe the answer is:
sapid
'agreeable' is the definition.
(thesaurus)
'school paid off' is the wordplay.
'school' becomes 'S'.
'off' indicates anagramming the letters.
'paid' with letters rearranged gives 'apid'.
's'+'apid'='SAPID'
(Other definitions for sapid that I've seen before include "Interesting" , "Engaging" , "savoury'" , "Pleasant tasting" , "Tasty" .)