Appropriate small amounts (6)
I believe the answer is:
pilfer
'appropriate' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pilfer that I've seen before include "Lift -- nick" , "Steal (sl.)" , "Steal (little things)" , "appropriate" , "Steal (cheap items)" .)