A lifetime is the entire length of time a person or other living thing is alive. After a famous actor dies, she may be fondly remembered for a lifetime of great movie roles.

Things that take up most of the duration of a person's life are often described using the word lifetime, like a terrible driver's lifetime ban on holding a driver's license, or a lifetime achievement award for all of your accomplishments. You can also talk about the lifetime of an object, or the length of time it's useful, and use lifetime figuratively, to mean "a very long time."

Definitions of lifetime

n the period during which something is functional (as between birth and death)

life, life-time, lifespan
afterlife, hereafter
life after death
kingdom come
the next world
perpetual life after death
Type of:
period, period of time, time period
an amount of time

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.