avouch [ə'vaʊtʃ]

以下由轻松背单词网站提供

vt.&vi.确说，断言

admit openly and bluntly; make no bones about

We can avouch for the quality. 我们保证质量。
I am willing to employ your friend if you will avouch his integrity. 如果你能保证你的朋友是个诚实的人，那么我很乐意聘用他。