... unnecessarily, as Countdown is finally going (3)
I believe the answer is:
too
'unnecessarily' is the definition.
Both the definition and answer are adverbs. Perhaps there's a link between them I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for too that I've seen before include "Additionally" , "On top - also" , "As well, also" , "What a pity!" , "To a greater than desirable extent" .)