vouch for
Upper Intermediate (B2)neutral
To tell people 'I know this person is good/trustworthy' or 'I know this thing is true' because you have personal experience.
"I can personally vouch for James — he's one of the most trustworthy people I've ever worked with."
Hear it in context

N3on Hosts a Massive Indian Mukbang!
N3ON · 53:30
I vouch for it.

SIDEMEN AMONG US IRL BUT IT’S THE DUMBEST LOBBY EVER
Sidemen · 6:32
I can vouch for me.

SIDEMEN AMONG US IRL BUT IT’S THE DUMBEST LOBBY EVER
Sidemen · 6:33
I can vouch for Simon.

Trump ADMITS DEFEAT During WILD PRESS Conference
Pod Save America · 37:24
we can vouch for them.

Baldur's Gate 3 - Part 45 - The Real Shadow Curse Is Inappropriately Timed Horniness
Many A True Nerd · 39:36
they'll vouch for us.