Party missing volleyball getting lost in Nice (6)
I believe the answer is:
lovely
'nice' is the definition.
(thesaurus)
'party missing volleyball getting lost' is the wordplay.
'party' becomes 'ball' (ball is a kind of party).
'missing' is a deletion indicator.
'getting lost' indicates an anagram.
'volleyball' with 'ball' taken away is 'volley'.
'volley' with letters rearranged gives 'LOVELY'.
'in' acts as a link.
(Other definitions for lovely that I've seen before include "Very nice -- coy elm (anag)" , "Admirable" , "Attractive" , "Beautiful or delightful" , "Adorable" .)