Some shout down to overcome ... (5)

I believe the answer is:

outdo

'overcome' is the definition.
(outdoing is a kind of overcoming)

'some shout down to' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'OUTDO' is hidden within 'shout down to'.

(Other definitions for outdo that I've seen before include "Cap" , "Perform better than, be superior to" , "Go one beter than, surpass" , "Best" , "Br superior to (someone)" .)

I've seen this clue in The Everyman puzzle in The Observer.

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