behalf

Noun

• for someone's benefit (usually expressed as `in behalf' rather than `on behalf' and usually with a possessive)
  • in your behalf
    
  • campaigning in his own behalf
    
  • spoke a good word in his friend's behalf
    

• as the agent of or on someone's part (usually expressed as "on behalf of" rather than "in behalf of");
  • the guardian signed the contract on behalf of the minor child
    
  • this letter is written on behalf of my client