Craft worker in Stuttgart is anxious (7)
I believe the answer is:
artisan
'craft worker' is the definition.
(someone skilled in a particular craft)
'in stuttgart is anxious' is the wordplay.
'in' indicates a hidden word.
'ARTISAN' is hidden within 'stuttgart is anxious'.
(Other definitions for artisan that I've seen before include "Journeyman" , "Tsarina (anag.)" , "Egypt peninsula; holy Mount" , "Train as (anag) - craftsman" , "Skilled tradesman" .)