Chap with a masterly way (3)
I believe the answer is:
man
'chap' is the definition.
(I've seen this before)
'with a masterly way?' is the wordplay.
'with' is an insertion indicator.
'masterly way?' becomes 'mn' (I can't justify this - if you can you should give a lot more credence to this answer).
'a' inserted within 'mn' is 'MAN'.
Can you help me to learn more?
(Other definitions for man that I've seen before include "Bishop, perhaps" , "race" , "Bloke" , "us?" , "Adult human male" .)