Definition of expire

The origin of the word "expire" can be traced back to the Middle English word "expireden," which meant "to breathe one's last breath." This word eventually evolved into the Modern English word "expire." The origin of the word can be further traced back to the Old French word "esper" which also meant "to breathe one's last breath." The Old French word, in turn, was likely derived from the Latin word "spirare," which meant "to breathe." In its original usage, the word "expire" referred solely to the act of breathing one's last breath and was often used in the context of someone dying. However, over time, the meaning of the word broadened to include the concept of something coming to an official end, such as the expiration of a lease, contract, or patent. Even in its current use, the association with death and breathing can still be seen in expressions like "expiration date" or "the expiration of life," which illustrate the word's origin as a descriptor for the end of life or activity.