cui bono

noun
cui bo·​no | \ ˈkwē-ˈbō-(ˌ)nō How to pronounce cui bono (audio) \

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

First Known Use of cui bono

1604, in the meaning defined at sense 1

History and Etymology for cui bono

Latin, to whose advantage?

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The first known use of cui bono was in 1604

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Cite this Entry

“Cui bono.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cui%20bono. Accessed 26 Feb. 2020.

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