TENET (2020) is Christopher Nolan's latest movie, and it has captivated audiences around the world. But why is it called "TENET"? The title is derived from a Latin word meaning “holding fast” or “to hold.” It is a fitting name for a movie that focuses on the concept of time inversion, where the past and future are intertwined. As the movie progresses, the characters learn to control time and use it to their advantage in order to save the world. The title speaks to the idea that the characters must hold fast to their beliefs in order to succeed, and it is an apt metaphor for the movie's themes of time manipulation and perseverance.