Parisian dear carries weapon for sweet talker (7)
I believe the answer is:
charmer
'sweet talker' is the definition.
(synonyms)
'parisian dear carries weapon' is the wordplay.
'parisian dear' becomes 'cher' (I can't explain this - if you can you should give a lot more credence to this answer).
'carries' means one lot of letters goes inside another (inserted letters carried inside).
'weapon' becomes 'arm' (synonyms).
'cher' going around 'arm' is 'CHARMER'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for charmer that I've seen before include "One who delights others" , "One playing with snake" , "One with personal attractiveness" , "One working with snake" , "Smoothie" .)