Stock cut, investing currency from the east (9)
I believe the answer is:
hackneyed
'stock' is the definition.
(both can mean cliche)
'cut investing currency from the east' is the wordplay.
'cut' becomes 'hacked' (hack can mean to chop or cut up).
'investing' indicates putting letters inside (inserted letters are taken in or invested).
'currency' becomes 'yen' (Japanese currency).
'from the east' shows that the letters should be reversed in order (on a map from right to left).
'yen' back-to-front is 'ney'.
'hacked' enclosing 'ney' is 'HACKNEYED'.
(Other definitions for hackneyed that I've seen before include "Overfamiliar through overuse" , "Overworked" , "corny" , "stock" , "Trite (expression)" .)