Parabellum: John Wick 3:

The film's subtitle is a double entendre that defines both the plot's stakes and its technical combat focus:

It is derived from the famous 4th-century Roman military quote by Vegetius: "Si vis pacem, para bellum," which translates to "If you want peace, prepare for war" . This reflects John's desire for a quiet life that can only be achieved by dismantling the forces hunting him. John Wick 3: Parabellum

A common deep-dive theory suggests Winston’s shooting of John at the end was not a betrayal but a calculated risk to save him. By shooting John in his armored vest and pushing him off the roof (where he could survive the fall), Winston satisfied the Adjudicator while giving John a chance to escape. The film's subtitle is a double entendre that