act for/on behalf of sb/sth
phrasal verbwithactverb[I]uk/ækt/us
LAW
torepresentaperson,company, etc. in acourtoflaw:
There are fewexceptionsto therulethat asolicitormay notactfor bothsellerandbuyer.
torepresentaperson,company, etc. ordealwiththeirbusinessfor them:
The Council of Mortgage Lendersclaimstoactfor 98% oflenders.
She wasauthorizedby theCommissiontoactonitsbehalf.