im·prop·er/ɪm`prɑpə; ɪmˈprɒpə/ adj 1 not correct according to moral, social, or professional rules 不适当的，不正确的: Many students failed due to improper use of punctuation. 许多学生因为标点使用不正确而未能通过考试。 2 illegal or dishonest 不合法的，不诚实的: This was an improper use of company funds. 这样使用公司资金是不合法的。