Disinclined to mix in a party (7)
I believe the answer is:
asocial
'disinclined to mix' is the definition.
I can't judge whether this defines the answer.
'a party' is the wordplay.
'party' becomes 'social' (social is a kind of party).
'a'+'social'='ASOCIAL'
'in' is the link.
Can you help me to learn more?
(Other definitions for asocial that I've seen before include "Not fond of company, perhaps inconsiderate" , "Avoiding company" , "Inconsiderate to others" , "Not gregarious" , "not connected with community" .)