Some exuberant ribaldry in the clan (6)
I believe the answer is:
tribal
'in the clan' is the definition.
'some exuberant ribaldry' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'TRIBAL' is hidden within 'exuberant ribaldry'.
(Other definitions for tribal that I've seen before include "Like certain social groups" , "Relating to groups with strong loyalties" , "concerning an ethnic group" , "Relating to people related by blood" , "Of a traditional social group" .)