Disputes with some unpopular guests (6)
I believe the answer is:
argues
'disputes' is the definition.
(I've seen this before)
'with some unpopular guests' is the wordplay.
'with' says the answer is hidden in the clue.
'ARGUES' is hidden within 'some unpopular guests'.
(Other definitions for argues that I've seen before include "Disputes, proposes the contrary" , "Disputes, contends verbally" , "Contends, debates" , "Debates or bickers" , "Quarrels or disagrees" .)