Go with chaperon (9)
I believe the answer is:
accompany
This clue is a double definition.
'go with' is the first definition.
(I've seen this before)
'chaperon' is the second definition.
(thesaurus)
(Other definitions for accompany that I've seen before include "Travel along with" , "Unbelief" , "Escort" , "Go with as a companion" .)