antisocial
/ˌæntɪˈsəuʃl; ˌæntɪ`soʃəl/ adj
1 opposed or harmful to the laws and customs of an organized community 反社会的（反对或妨害法律与风俗习惯的）
It is antisocial to leave one's litter in public places. 在公众场所遗弃杂物是妨害公众利益的.
2 avoiding the company of others; unsociable 避免社交的; 不合群的:,antisocial be`haviour 不爱交际的行为
It's rather antisocial of you not to come to the party. 你不参加这个聚会就有些不合群了.