Crossword Genius

Scores four? Many more (6)

Ross

I believe the answer is:

eighty

'scores four?' is the definition.
(four scores - a score is 20)

'many more' is the wordplay.
'many' becomes 'eight' (example).
'more' becomes 'y' (I can't justify this - if you can you should give a lot more credence to this answer).
'eight'+'y'='EIGHTY'

(Other definitions for eighty that I've seen before include "Figure" , "Number" , "score less than a hundred" , "22 [FOUR] scores" , "not many score" .)

I've seen this clue in The Guardian.
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