Anxious new bride with stud (9)
I believe the answer is:
disturbed
'anxious' is the definition.
(thesaurus)
'new bride with stud' is the wordplay.
'new' is an anagram indicator.
'with' means one lot of letters go next to another.
'bride' put after 'stud' is 'studbride'.
'studbride' anagrammed gives 'DISTURBED'.
(Other definitions for disturbed that I've seen before include "Emotionally upset -- worried" , "Intruded on" , "Changed the set arrangement or made uneasy" , "Agitated" , "Interrupted" .)