Crossword Genius

Full of oneself in Dart almost going from Capital to Greystones with worker (8)

Ross

I believe the answer is:

arrogant

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'full of oneself' is the definition.
(I've seen this in another clue)

I can't explain the rest of the clue.

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(Other definitions for arrogant that I've seen before include "Overly self-important" , "High and mighty" , "Overweening" , "Haughty - imperious" , "Having an exaggerated sense of one's own importance" .)

I've seen this clue in the Irish Times (Crosaire) and The Irish Times.
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