merrymaking       
noun [ U ]  literary uk/ˈmer.iˌmeɪ.kiŋ/ us/ˈmer.iˌmeɪ.kiŋ/
 尽情欢乐,寻欢作乐
the act of celebrating and having an enjoyable time
  The eating, drinking, and merrymaking went on late into the night. 吃喝玩乐一直持续到深夜。 
 Synonym: jollification