Being famous and wealthy, as well as weirdly unselfconscious, spits out onion (10)

I believe the answer is:

successful

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'being famous' is the definition.
(thesaurus)

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

(Other definitions for successful that I've seen before include "Winning; flourishing" , "achieving aim" , "Prosperous" .)

I've seen this clue in The Irish Times.

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