obstructor

详细解释:n. 妨害者, 妨碍物, 阻碍者
【法】 阻碍者, 妨害者, 阻碍物

英语解释：

名词 obstructor:

someone who systematically obstructs some action that others want to take同义词：obstructionist, obstructer, resister, thwarter