Terminer is a French verb that means "to finish" or "to complete". It's a versatile word that can be used in different contexts, such as work, school, or daily activities. However, if you want to avoid redundancy and find alternative ways to express ending something, there are plenty of synonyms to choose from. For instance, you could use words like "conclude", "finalize", "wrap up", "cease", "halt", "terminate", "end", "finish up", "bring to a close", "round off", "bring to an end", "close out", "complete", "culminate", "wind up", "draw to a close", among others. All of these expressions convey the same meaning as "terminer", but with a variety of tones and nuances.