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Definitions

lifetime

[lahyf-tahym] / ˈlaɪfˌtaɪm /
NOUN
span of animate being's existence
Synonyms
STRONGEST
career life period
STRONG
continuance course days endurance existence time
WEAK
all one's born days cradle to grave life span natural life
Antonyms
STRONG
end

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I understand that everything is very expensive, but this would be the trip of a lifetime.

From MarketWatch • Apr. 9, 2026

The total fertility rate is the average number of children each woman would have in her lifetime if birthrates for each age group were to continue at that year’s pace through her childbearing years.

From The Wall Street Journal • Apr. 9, 2026

Although Lopes’ lifetime batting average was .263, he had an excellent eye, walking nearly as many times as he struck out and logging an excellent .349 on-base percentage.

From Los Angeles Times • Apr. 8, 2026

How many major finals have you had the pleasure of watching your team play in - and win - during your lifetime?

From BBC • Apr. 5, 2026

It seems a lifetime ago that he walked to the circus, though it was only a few hours.

From "The Night Circus" by Erin Morgenstern