Carnival provided retired with free teas (6)
I believe the answer is:
fiesta
'carnival' is the definition.
(thesaurus)
'provided retired with free teas' is the wordplay.
'provided' becomes 'if'.
'retired' shows that the letters should be reversed in order.
'with' says to put letters next to each other.
'free' is an anagram indicator.
'if' back-to-front is 'fi'.
'teas' with letters rearranged gives 'esta'.
'fi'+'esta'='FIESTA'
(Other definitions for fiesta that I've seen before include "public event abroad" , "religious celebration" , "(Iberian) religious holiday" , "Spanish holiday" , "A Spanish public celebration" .)