mer·ry·mak·ing /-kɪŋ/
  作樂
  Mer·ry·mak·ing a. Making or producing mirth; convivial; jolly.
  Mer·ry·mak·ing, n. The act of making merry; conviviality; merriment; jollity.
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  merrymaking
       n : a boisterous celebration; a merry festivity [syn: conviviality,
            jollification]