Ability to win them over with funny archaism (8)
I believe the answer is:
charisma
'ability to win them over' is the definition.
I can't tell whether this definition defines the answer.
'funny archaism' is the wordplay.
'funny' is an anagram indicator.
'archaism' anagrammed gives 'CHARISMA'.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for charisma that I've seen before include "Personal magnetism, great charm" , "attractive quality" , "Divinely bestowed power" , "That special gift" , "Amish car (anag.)" .)