Half cancelling old-fashioned entry after a person one knows (12)
I believe the answer is:
acquaintance
'person one knows' is the definition.
I can't judge whether this defines the answer.
'half cancelling old-fashioned entry after a' is the wordplay.
'half' means to take half the letters.
'old-fashioned' becomes 'quaint' (cutely old-fashioned).
'entry' indicates putting letters inside.
'after' says to put letters next to each other.
'cancelling' cut in half is 'cance'.
'cance' enclosing 'quaint' is 'cquaintance'.
'cquaintance' after 'a' is 'ACQUAINTANCE'.
Can you help me to learn more?
(Other definitions for acquaintance that I've seen before include "Person known slightly" , "Familiarity" , "contact" , "Slight knowledge" , "Familiar person" .)