Frenchman is suitable for Nick (14)
I believe the answer is:
misappropriate
'nick' is the definition.
(I've seen this before)
'frenchman is suitable' is the wordplay.
'frenchman' becomes 'mis' (I can't explain this - if you can you should believe this answer much more).
'is suitable' becomes 'appropriate' (similar in meaning).
'mis'+'appropriate'='MISAPPROPRIATE'
'for' is the link.
Can you help me to learn more?
(Other definitions for misappropriate that I've seen before include "Take dishonestly for one's own use" , "Unfairly take for one's own use" , "Nick" , "Lift" , "pocket" .)