Free of sin, one's fit to be kissed in audience (10)
I believe the answer is:
impeccable
'free of sin' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?
'one's fit to be kissed in audience' is the wordplay.
I cannot quite see how this works, but
'one's' could be 'im' ('one is' is a formal way of saying 'I am') and 'im' is located in the answer.
'fit' could be 'able' (similar in meaning) and 'able' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for impeccable that I've seen before include "In accordance with the highest standards" , "Perfect - pure" , "Faultless" , "Without fault" , "Immaculate" .)