unpolished
/ˌʌnˈpɒlɪʃt/adjective
1- not having a polished surface未磨光的; 未擦亮的：
his shoes were unpolished.
他的鞋未擦过。
1.1
- unrefined in style or behaviour未经润饰的; 粗鲁的：
his work is unpolished and sometimes incoherent.
他的作品粗糙, 有时缺乏连贯。