The big, big hug auntie finishes with (4)
I believe the answer is:
huge
'the big big hug auntie finishes with' is the definition.
I can't judge whether this defines the answer.
'the big big hug auntie finishes' is the wordplay.
'the big big' becomes 'hu' (I can't justify this - if you can you should give a lot more credence to this answer).
'finishes' indicates one should take the final letters (I've seen 'finishing' mean this (the letter which finishes the word)).
The final letters of 'hug auntie' are 'ge'.
'hu'+'ge'='HUGE'
Can you help me to learn more?
(Other definitions for huge that I've seen before include "Mammoth" , "Vast; immense" , "Extremely large" , "Unusually large" , "Colossal" .)