on behalf of
Definitions
As a representative of or proxy for someone else.
In the interest of or for the benefit of a person or group.
Examples
I am writing this letter on behalf of my client to express our formal complaint.
She accepted the award on behalf of the entire research team.
Synonyms
in the name of as a representative of for the benefit of on the part of representing proxy for
Antonyms
in one's own right personally individually for oneself independently