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

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of lifetime Critical illness and death threaten, and even those who survive may face a lifetime of health challenges. Pablo Robles, New York Times, 14 Sep. 2025 All presidents have faced threats, and all former presidents also get lifetime Secret Service protection. Chris Boyette, CNN Money, 14 Sep. 2025 In other news, singles should consider dating outside of their normal type or someone from a different background, culture or place of origin — this could be the love of a lifetime! Kyle Thomas, PEOPLE, 14 Sep. 2025 Kevin Spacey paid tribute to the late Val Kilmer while accepting a lifetime achievement trophy at the Septimius Awards last week, going so far as to dedicate the honor to his lifelong friend. Chris Gardner, HollywoodReporter, 12 Sep. 2025 See All Example Sentences for lifetime
Recent Examples of Synonyms for lifetime
Noun
  • Users can dismiss specific advertisements on the cover screen to ensure they won’t be shown for the ad campaign’s duration, and ads will not display when the cover screen is in Art Mode or showing picture albums.
    Sasha Rogelberg, Fortune, 19 Sep. 2025
  • That ended up not being an issue, as middle relievers filled out the duration of Thursday’s game and the Padres got just two men on base over the final six innings.
    Kevin Acee, San Diego Union-Tribune, 19 Sep. 2025
Noun
  • In addition to proper nutrition, staying active with daily exercise is a proven way to extend lifespan.
    Angelica Stabile, FOXNews.com, 19 Sep. 2025
  • This extends the lifespan of expensive hardware and enhances overall site efficiency, directly impacting operational costs and environmental footprint.
    Wes Cummins, Forbes.com, 18 Sep. 2025
Noun
  • Passenger travel time between Paris, Europe’s second-largest metropolitan area, and Milan, Europe’s third-largest metropolitan area, will be reduced to 4½ hours from 6½-7½ hours.
    Dave Smith, Fortune, 19 Sep. 2025
  • Those well-versed in cinematic tropes will know that these two are bound to spend time together outside of the dental office.
    Peter Tonguette, The Washington Examiner, 19 Sep. 2025
Noun
  • The story of a violent but ultimately fruitful encounter between Norman and Saxon worlds was coherent, accessible, and deeply relevant to the ideas and customs that still undergird much of British (and American) life.
    Will Collins, The Washington Examiner, 19 Sep. 2025
  • The Future At NASA, the future of exoplanet science will emphasize finding rocky planets similar to Earth and studying their atmospheres for biosignatures — any characteristic, element, molecule, substance, or feature that can be used as evidence of past or present life, says the space agency.
    Bruce Dorminey, Forbes.com, 19 Sep. 2025

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“Lifetime.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lifetime. Accessed 21 Sep. 2025.

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