Pericles revised, six boxed; it's rather casually paid (3,7)
I believe the answer is:
lip service
'boxed it's rather casually paid' is the definition.
I can't judge whether this defines the answer.
'pericles revised six' is the wordplay.
I cannot quite see how this works, but
'six' could be 'vi' (roman numeral) and 'vi' is located in the answer.
an anagram of 'pericles' is 'lipserce' which is within the left over letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for lip service that I've seen before include "It may be paid" , "The hypocrisy" , "Insincere praise" , "Unreliable support" , "getting no proper acknowledgment" .)