[noun] [U] - on behalf of someone/on someone's behalf representing; instead ofOn behalf of the company as a whole, I would like to thank you for all your work.Unfortunately, George cannot be with us today so I am pleased to accept this award on his behalf.Please don't leave on my behalf (= because of me).
BEHALF
Meaning of BEHALF in English
Cambridge English vocab. Кембриджский английский словарь. 2012