Word silver worker used for shrewish woman (9)
I believe the answer is:
termagant
'for shrewish woman' is the definition.
(I've seen this before)
'word silver worker' is the wordplay.
'word' becomes 'term' (term is a kind of word).
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'worker' becomes 'ant' (worker is a type of ant).
'term'+'ag'+'ant'='TERMAGANT'
'used' acts as a link.
(Other definitions for termagant that I've seen before include "Witch" , "Garment at odds with shrewish woman" , "Woman to avoid" , "Harsh-tempered woman" , "brawling" .)