cui bono? /kī or kwē bōˈnō, or kooˈē boˈnō/

1. For whose benefit or advantage is it?
2. Who is the gainer?

• protium
• protiums
• proto-
• Proto
• protoactinium
• protoactiniums
• protoavis
• protoavises
• Protochordata
• protochordate
• protochordates
• protococcal
• Protococcales
• Protococcus
• protocol
• protocolic
• protocolise
• protocolist
• protocolists
• protocolize
• protocolled
• protocolling
• protocols
• protogalaxies
• protogalaxy