Crossword Genius

Busy, and furious dismissing Republican for good (7)

Ross

I believe the answer is:

engaged

I'm a little stuck... Click here to teach me more about this clue!

'busy' is the definition.
(I know that busy can be written as engaged)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for engaged that I've seen before include "Bethrothed" , "Given a ring" , "Preoccupied" , "Hired; busy" , "Took on" .)

I've seen this clue in The Telegraph.
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