Chided for having a bun perhaps (9)

I believe the answer is:

upbraided

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'chided' is the definition.
The definition and answer can be both to do with communicating as well as being past participle verbs.
Maybe you can see a link between them that I don't see?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for upbraided that I've seen before include "Carpeted" , "faulted" , "Told off" , "Scolded, reproached" , "Admonished" .)

I've seen this clue in The Globe and Mail.

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