Astonishing, astounding (7)

I believe the answer is:

amazing

I believe this clue is a double definition.

'astonishing' is the first definition.
(synonyms)

'astounding' is the second definition.
('amaze' can be a synonym of 'astound')

(Other definitions for amazing that I've seen before include "Incredible" , "Sensational" , "Astounding, awe-inspiring" , "Causing great surprise" , "Astonishing, remarkable" .)

I've seen this clue in The Irish Times.

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