smear [smɪə(r)]

以下由轻松背单词网站提供

vt.涂抹；诽谤，玷污；vi.被弄脏；n.污点；诽谤，污蔑

to spread a liquid or a thick substance over a surface

He has been spreading false stories in an attempt to smear us. 他一直在散布谎言企图诽谤我们。
There's a smear on your shirt. 你衬衫上有个污点。