A labyrinth to astonish (5)

I believe the answer is:

amaze

'to astonish' is the definition.
('amaze' can be a synonym of 'astonish')

'a labyrinth' is the wordplay.
'labyrinth' becomes 'maze' (synonyms).
'a'+'maze'='AMAZE'

(Other definitions for amaze that I've seen before include "Greatly surprise, fill with wonder" , "Stun" , "Flabbergast" , "Stagger" , "Greatly surprise, astound" .)

I've seen this clue in The Irish Independent.

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