One nun I'd upset with insinuation (8)
I believe the answer is:
innuendo
'insinuation' is the definition.
(I know that insinuation can be written as innuendo)
'one nun i'd upset' is the wordplay.
'upset' is an anagram indicator.
'one'+'nun'+'id'='onenunid'
'onenunid' anagrammed gives 'INNUENDO'.
'with' is the link.
(Other definitions for innuendo that I've seen before include "Smutty insinuation" , "derogatory reference" , "Oblique allusion" , "Naughty suggestion" , "Rude suggestion" .)