Crossword Genius

What an idiot Edward is to have helped! (8)

Ross

I believe the answer is:

assisted

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'helped' is the definition.
('assist' can be a synonym of 'help')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for assisted that I've seen before include "Helped" , "given help" , "Lent a hand" , "to small sibling involved in stormy dates" , "Aided" .)

I've seen this clue in The Irish Independent.
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