Crossword Genius

Very suggestively dumping American out of spite (12)

Ross

I believe the answer is:

vindictively

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'very' is the definition.
Both the answer and definition are adverbs. Maybe there's an association between them I don't understand?

I cannot understand how the rest of the clue works.

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(Another definition for vindictively that I've seen is " (Done) with strong desire for revenge".)

I've seen this clue in The Guardian.
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