Crossword Genius

Charlie, child of the 60s, a bit resentful? (6)

Ross

I believe the answer is:

chippy

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'resentful?' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for chippy that I've seen before include "One of two eating oysters" , "Oversensitive - traditional British food shop" , "Irritable; carpenter" , "Carpenter - for fried food!" , "employee of building firm?" .)

I've seen this clue in The Times.
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