Synonyms:
vouch
Meaning: give personal assurance; guarantee; "Will he vouch for me?"
Usage examples
I do not vouch for
I won't vouch for what the old horse was thinking, for it is very difficult to find out what any old horse is thinking.
The world may not like to see these ideas dissevered, for it has been accustomed to blend them; finding it convenient to make external show pass for sterling worth--to let white-washed walls vouch for clean shrines.