Definition of behalf noun from the Oxford Advanced American Dictionary

    

behalf

 noun
noun
NAmE//bɪˈhæf//
 
 
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Idioms
in behalf of somebody,in somebody's behalf
 
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 in order to help someone 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 someone 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. 2because of someone; for someone Don't worry on my behalf.
  3. 3in order to help someone They campaigned on behalf of asylum seekers.
See the Oxford Advanced Learner's Dictionary entry: behalf