demerit
noun [ C ] uk/ˌdiːˈmer.ɪt/ us/ˌdiːˈmer.ɪt/
formal缺陷；劣势
a fault or disadvantage
We need to consider the merits and demerits of the plan. 我们需要考虑该计划的优缺点。
（尤指学校给学生的）记过，过失分
a mark given to someone, especially a student in a school, because they have done something wrong or broken a rule
She got three demerits for lateness on this term's report. 她因迟到在本学期总评中被记过3次。