adj.无事实根据的；无基础的；尚未建立的
We hold that their proposal is unfounded. 我们认为他们的建议是无事实根据的。
The claims are, I repeat, totally unfounded. 我再说一遍，这些说法是毫无根据的。
This saying is completely unfounded. 这种说法完全是无稽之谈。
I have to say this fear is unfounded. 我必须说，这种担心纯属杞人忧天。
The rumor that he was arrested was unfounded. 关于他被捕的传闻是没有根据的。
