Astonished by work in French? I'd say (4-4)
I believe the answer is:
open-eyed
'astonished' is the definition.
(I've seen this before)
'work in french? i'd say' is the wordplay.
'work' becomes 'op' (abbreviation for opus).
'in french?' becomes 'en' ('in' in French).
'say' shows a homophone (sound like).
'id' is a homophone of 'eyed'.
'op'+'en'+'eyed'='OPEN-EYED'
'by' is the link.
(Other definitions for open-eyed that I've seen before include "Astonished - watchful" , "Surprised - aware" , "Astonished; fully aware" , "Forming an encrusted mass" .)