Definition
- B2
to assist or provide support to an individual
In meetings, he always backs me up on my points.
I need you to back me up on this project.
If you have any questions, remember I’m always here to back you up.
- C2
to confirm that an individual is being truthful
She will back me up in court to prove that I did nothing wrong.
I can have other colleagues back me up on my statement.
He said he would back me up, which reassured me.