First Known Use: 1604
Dictionary
cui bono
noun cui bo·no \ˈkwē-ˈbō-(ˌ)nō\
Definition of CUI BONO
1
: a principle that probable responsibility for an act or event lies with one having something to gain
2
: usefulness or utility as a principle in estimating the value of an act or policy
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Origin of CUI BONO
Latin, to whose advantage?
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