Easy thing, getting large settle (6)
I believe the answer is:
clinch
'settle' is the definition.
(I know that clinch is a more specific form of settle)
'easy thing getting large' is the wordplay.
'easy thing' becomes 'cinch' (I can't justify this - if you can you should give a lot more credence to this answer).
'getting' indicates putting letters inside.
'large' becomes 'L' (eg in clothes sizes).
'cinch' going around 'l' is 'CLINCH'.
Can you help me to learn more?
(Other definitions for clinch that I've seen before include "Fierce embrace" , "Confirm - embrace" , "Settle conclusively, a deal say" , "Passionate embrace" , "Tight (or amorous) embrace" .)