Quartet diverts more of us (8)
I believe the answer is:
foursome
'quartet' is the definition.
(synonyms)
'diverts more of us' is the wordplay.
'diverts' indicates an anagram (I've seen 'diverted' mean this (each letter get diverted elsewhere)).
'more'+'of'+'us'='moreofus'
'moreofus' is an anagram of 'FOURSOME'.
(Other definitions for foursome that I've seen before include "The Beatles, for example" , "Tennis doubles players, for example" , "enough for rubber" , "Golfing group, perhaps" , "In game" .)