Row with the French getting upset (6)
I believe the answer is:
rankle
'upset' is the definition.
(I've seen this before)
'row with the french' is the wordplay.
'row' becomes 'rank' (I've seen this before**).
'with' is a charade indicator (letters next to each other).
'the french' becomes 'le'.
'rank'+'le'='RANKLE'
'getting' acts as a link.
(Other definitions for rankle that I've seen before include "Continually vex or irritate" , "Continue to annoy" , "Irritate for a long time" , "Cause continuing irritation" , "Cause continuing annoyance or resentment" .)