1. to give a guarantee or assurance about someone or something
Usage: often followed by ‘for’
2. to give evidence or serve as proof of something
Usage: formal

Examples

• I can vouch for his honesty and reliability.
• Several witnesses vouched for the defendant’s whereabouts.
• The certificate vouches for the authenticity of the painting.
• My boss will vouch for my work ethic.
• Can anyone vouch for what happened that night?
• The documents vouch for the company’s financial stability.
• I wouldn’t vouch for the accuracy of that report.