Skilled but very worried suitor has nothing (8)
I believe the answer is:
virtuoso
'skilled' is the definition.
('virtuoso' can be similar in meaning to 'skilled')
'very worried suitor has nothing' is the wordplay.
'very' becomes 'v' (abbreviation).
'worried' is an anagram indicator.
'has nothing' becomes 'o' (I've seen this in other clues).
'suitor' is an anagram of 'irtuos'.
'v'+'irtuos'+'o'='VIRTUOSO'
'but' acts as a link.
(Other definitions for virtuoso that I've seen before include "Great musical performer" , "Highly skilled performer" , "Person who excels in techniques of singing or playing music" , "Highly-skilled musician" , "Maven" .)