Full of oneself in Dart almost going from Capital to Greystones with worker (8)
I believe the answer is:
arrogant
'full of oneself' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(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" .)