Stupid African despot for the listener (7)

I believe the answer is:

idiotic

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'stupid' is the definition.
(thesaurus)

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

(Other definitions for idiotic that I've seen before include "without intelligence" , "Stupid, foolish" , "half-baked" , "Fatuous" , "Altogether nonsensical" .)

I've seen this clue in The Telegraph.

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