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
Her dad was the credit manager for a local chain of appliance stores, a second-generation Jewish immigrant, and a lifelong Republican.
—
Zayd Ayers Dohrn, New Yorker, 28 Mar. 2026
Fitness icon Jack LaLanne had a lifelong goal to make it to his 100th birthday (and beyond), while spending his career making others smile and feel better.
—Philip Potempa, Chicago Tribune, 27 Mar. 2026
Robinson, a lifelong Prairie Village resident, first ran for local office in 2021 and won reelection last November.
—Taylor O'Connor, Kansas City Star, 27 Mar. 2026
The case for Ambersons, meanwhile, is very specific to Saatchi and Rose, who both harbor a lifelong obsession with completing this work.
—David Canfield, HollywoodReporter, 27 Mar. 2026
See All Example Sentences for lifelong
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Zayd Ayers Dohrn, New Yorker, 28 Mar. 2026
Fitness icon Jack LaLanne had a lifelong goal to make it to his 100th birthday (and beyond), while spending his career making others smile and feel better.
—Philip Potempa, Chicago Tribune, 27 Mar. 2026
Robinson, a lifelong Prairie Village resident, first ran for local office in 2021 and won reelection last November.
—Taylor O'Connor, Kansas City Star, 27 Mar. 2026
The case for Ambersons, meanwhile, is very specific to Saatchi and Rose, who both harbor a lifelong obsession with completing this work.
—David Canfield, HollywoodReporter, 27 Mar. 2026
See All Example Sentences for lifelong
Cite this Entry
“Lifelong.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lifelong. Accessed 29 Mar. 2026.
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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