Crossword Genius

Confirmation (5)

Ross

I think it could be either:

Which length description are you looking for?:

5

13

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

This is all the clue.

(Other definitions for proof that I've seen before include "Measure of the strength of alcohol" , "Trial printing" , "Exposition ending QED?" , "mathematical tour de force" , "Test" .)

I've seen this clue in The Sunday Times, The Times and the Penny Press.
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