as in duration
the period during which something exists, lasts, or is in progress
the lifetime of the camera's batteries was so short we couldn't get through a day trip without having to replace them
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Example Sentences
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Recent Examples of lifetime
Even a lifetime of swimming privileges – depending on the size of the lawn, a year’s worth of maintenance at a home that’s not yours is quite a big ask.
—
Eric Thomas, The Orlando Sentinel, 27 June 2025
Even a lifetime of swimming privileges — depending on the size of the lawn, a year’s worth of maintenance at a home that’s not yours is quite a big ask.
—R. Eric Thomas, Denver Post, 27 June 2025
So these events are rare, and most people go a lifetime without seeing one.
—Kierra Frazier, CBS News, 26 June 2025
It’s sparked his season A peak of a lifetime followed some of Kerkering's lowest moments in professional baseball.
—Charlotte Varnes, New York Times, 17 June 2025
See All Example Sentences for lifetime
Eric Thomas, The Orlando Sentinel, 27 June 2025
Even a lifetime of swimming privileges — depending on the size of the lawn, a year’s worth of maintenance at a home that’s not yours is quite a big ask.
—R. Eric Thomas, Denver Post, 27 June 2025
So these events are rare, and most people go a lifetime without seeing one.
—Kierra Frazier, CBS News, 26 June 2025
It’s sparked his season A peak of a lifetime followed some of Kerkering's lowest moments in professional baseball.
—Charlotte Varnes, New York Times, 17 June 2025
See All Example Sentences for lifetime
Recent Examples of Synonyms for lifetime
Noun
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Each canine’s sniffing behavior is tracked by sensors and algorithms that quantify subtle physiological cues, such as sniff duration, hesitation or posture.—
Sindhya Valloppillil,
Forbes.com,
1 July 2025
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So far, the rally has been nearly uninterrupted, allowing MSFT to sustain short-term overbought conditions for an unusually long duration, but a new counter-trend signal from the DeMARK Indicators (denoted by the '13') suggests a short-term downturn may be imminent.—
Katie Stockton,
CNBC,
30 June 2025
Noun
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Benfica are not rooting for Enzo Fernandez to become a world champion this time around.—
Liam Twomey,
New York Times,
28 June 2025
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Conveniently offered in a flip-top box, the back of the 4 by 6-inch cards includes the type of soil, hardiness, habitat, bloom time, pollinators, and pests for each flower type.—
Joshua Siskin,
Oc Register,
28 June 2025
Noun
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Thus, scientists are looking at its life span, possible numbers in the ocean and predators.—
Ashley Mackin Solomon,
San Diego Union-Tribune,
23 June 2025
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Burney, a Baltimore native who’s about to head out on an East Coast book tour, succeeds at crafting a work that’s as much a poignant reflection on his life as an ethnomusical study.—
Andre Gee,
Rolling Stone,
23 June 2025
Cite this Entry
“Lifetime.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lifetime. Accessed 6 Jul. 2025.
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