9 convivial

convivial
adj
(esp fml 尤作文雅语)
1 cheerful and sociable; fond of being with others 愉快而随和的; 好交际的
    convivial companions 喜欢交际的朋友.
2 full of shared pleasure and friendliness 联欢的; 联谊的
    a convivial evening, atmosphere 欢乐的夜晚、 气氛.