hearsay

You can't judge them solely on the basis of hearsay.你不能仅凭传言就对他们下判断。

They're supposedly getting married soon, but that's just hearsay.人们认为他们快要结婚了，但那只不过是传闻。

(law) hearsay evidence [=evidence presented by a witness that is based on another person's statement]传闻证据