pretty的反义词，而且是p开头

反义词是partly，例如：

1、Size of pension depends partly on length of service with the company.退休金的多少部分取决于为公司服务时间的长短。

2、He was only partly responsible for the accident.他对这次事故只负有部分责任。

3、I didn't enjoy the trip very much， partly because of the weather.我旅行过得不太愉快，部分是因为天气的缘故。