Crossword Genius

Unsociable sort is unhappy at party (5)

Ross

I believe the answer is:

saddo

'unsociable sort' is the definition.

'unhappy at party' is the wordplay.
'unhappy' becomes 'sad' ('sad' can be a synonym of 'unhappy').
'at' means one lot of letters go next to another.
'party' becomes 'do' (do is a kind of party).
'sad'+'do'='SADDO'

'is' is the link.

(Other definitions for saddo that I've seen before include "Boring loner" , "pathetic person" , "loser" , "nerdy type" , "lonely person" .)

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