Finesse to con with when you get in touch (4)
I believe the answer is:
tact
'finesse' is the definition.
(I've seen this in another clue)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for tact that I've seen before include "Sensitivity in dealing with people" , "Sensitivity, diplomacy" , "Sensitivity (in dealing with others)" , "Consideration and sensitivity" , "Fine perception" .)