vouch

Universal Words verb PHRASALVERBS vouch for sb/sth 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. vouch for sth to say that you believe that sth is true or good because you have evidence for it: I was in bed with the flu. My wife can vouch for that.