Definition of behalf noun from the Oxford Advanced Learner's Dictionary



BrE BrE//bɪˈhɑːf//
; NAmE NAmE//bɪˈhæf//
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Word OriginMiddle English: from a mixture of the earlier phrases on his halve and bihalve him, both meaning ‘on his side’ (see by, half).Idioms
in behalf of somebody, in somebody’s behalf
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 (US English) in order to help somebody We collected money in behalf of the homeless.
    on behalf of somebody, on somebody’s behalf
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  1. 1  as the representative of somebody or instead of them On behalf of the department I would like to thank you all. Mr Knight cannot be here, so his wife will accept the prize on his behalf.
  2. 2  in order to help somebody They campaigned on behalf of asylum seekers.
  3. 3because of somebody; for somebody Don't worry on my behalf.
See the Oxford Advanced American Dictionary entry: behalf