cui bono

noun cui bo·no \ˈkwē-ˈbō-(ˌ)nō\

Definition of CUI BONO

:  a principle that probable responsibility for an act or event lies with one having something to gain
:  usefulness or utility as a principle in estimating the value of an act or policy

Origin of CUI BONO

Latin, to whose advantage?
First Known Use: 1604

Rhymes with CUI BONO


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