More excited by capital (4)
I believe the answer is:
rome
'capital' is the definition.
(capital of Italy)
'more excited' is the wordplay.
'excited' is an anagram indicator.
'more' is an anagram of 'ROME'.
'by' is the link.
(Other definitions for rome that I've seen before include "Colosseum city" , "Italian city" , "Seat of Italian empire" , "Spanish Steps city" , "church" .)