VOUCH FOR SB/STH


Meaning of VOUCH FOR SB/STH in English

to say that you believe that sb will behave well and that you will be responsible for their actions :

Are you willing to vouch for him?

I can vouch for her ability to work hard.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.