1
: lasting or continuing through life
a lifelong friendship
2
Examples of lifelong in a Sentence
He had a lifelong love of nature.
Recent Examples on the Web
Gillis, a Mechanicsburg native and lifelong Eagles fan who cameoed in the team's 2024 hype video, announced his one-night-only show at Lincoln Financial Field in Philadelphia on July 17, 2026.
—
Tom Dougherty, CBS News, 25 Nov. 2025
At present, the licensed treatment is a costly (£375,000 per year), weekly, lifelong Enzyme Replacement Therapy (ERT) called Elaprase.
—Mrigakshi Dixit, Interesting Engineering, 24 Nov. 2025
Moreover, early exposure to sweet flavors can reinforce lifelong preferences for sweet foods, potentially influencing emotional regulation and behavior for years to come.
—Dr. Baibing Chen, CNBC, 24 Nov. 2025
Around the same time, Kier began his lifelong collaboration with von Trier.
—Jack Dunn, Variety, 23 Nov. 2025
See All Example Sentences for lifelong
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Tom Dougherty, CBS News, 25 Nov. 2025
At present, the licensed treatment is a costly (£375,000 per year), weekly, lifelong Enzyme Replacement Therapy (ERT) called Elaprase.
—Mrigakshi Dixit, Interesting Engineering, 24 Nov. 2025
Moreover, early exposure to sweet flavors can reinforce lifelong preferences for sweet foods, potentially influencing emotional regulation and behavior for years to come.
—Dr. Baibing Chen, CNBC, 24 Nov. 2025
Around the same time, Kier began his lifelong collaboration with von Trier.
—Jack Dunn, Variety, 23 Nov. 2025
See All Example Sentences for lifelong
Cite this Entry
“Lifelong.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lifelong. Accessed 28 Nov. 2025.
Copy CitationKids Definition
lifelong
adjective
life·long
ˈlī-ˌflȯŋ 
: continuing or lasting through life
a lifelong love for trees
a lifelong friendship
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