Flummox Parisian no more (7)

I believe the answer is:

nonplus

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'flummox' is the definition.
(synonyms)

'parisian no more' is the wordplay.
'parisian no' becomes 'non' (I've seen this in other clues. I am not sure about the 'parisian' bit.).
'more' becomes 'plus' (I've seen this before).
'non'+'plus'='NONPLUS'

Can you help me to learn more?

(Other definitions for nonplus that I've seen before include "Baffle" , "Throw into confusion" , "stump" , "Surprise and confuse" , "Get flummoxed" .)

I've seen this clue in The Sun.

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