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
People Are Reading
Origin and Etymology of cui bono
Latin, to whose advantage?
Learn More about cui bono
Seen and Heard
What made you want to look up cui bono? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!