Crossword Genius

Fixed and definitive (4,3,4)

Ross

I believe the answer is:

hard and fast

'fixed and definitive' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for hard and fast that I've seen before include "Not moving" , "(Of rules) unalterable" , "Fixed and definitive" , "Strict" , "like a cannonball" .)

I've seen this clue in The Guardian.
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