Crossword Genius

Last decider (5)

Ross

I believe the answer is:

final

I believe this is a double definition.

'last' is the first definition.
(synonyms)

'decider' is the second definition.
(eg decider in a sporting contest)

(Other definitions for final that I've seen before include "Coming at the end" , "Last in a series of games or contests" , "Not to be altered" , "big match" , "Last match in a competition" .)

I've seen this clue in The Mirror.
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