on behalf of

phrase

variants or on someone's behalf

1

also US in behalf of someone or in someone's behalf : as a representative of someone

The teacher accepted the award on behalf of the class. = The teacher accepted the award on the class's behalf.

2

also US in behalf of someone or in someone's behalf : for the benefit of someone : in support of someone

She spoke in behalf of the other candidate.

They're willing to do anything on their child's behalf.

3

: because of someone : to please someone

Don't get up on my behalf.