Crossword Genius

Unimprovable (5)

Ross

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8

ideal

'unimprovable' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for ideal that I've seen before include "Very eager (to see)" , "example" , "just the job" , "Pattern" , "(the best one can get)" .)

I've seen this clue in The Guardian.
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