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variants:
or on someone's behalf
Definition of on behalf of someone
1 : as a representative of someone
The teacher accepted the award on behalf of the whole class.
2 or 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
Don't get up on my behalf.
Comments on on behalf of someone
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Share on behalf of someone