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
The lifelong Catholic now follows content creators of all ages on Instagram and YouTube, moved by those who share their faith journeys while dealing with tribulations such as cancer.
—
Marc Ramirez, USA Today, 23 Sep. 2025
The group stressed that autism is a lifelong, complex condition with no single cause or cure, and that premature claims about acetaminophen or leucovorin ignore decades of rigorous research and risk creating false hope and harm.
—Mary Kekatos, ABC News, 23 Sep. 2025
In celebration, the annual Grand Finale Dinner will feature an outstanding lineup of headlining chefs and sommeliers, capping off a weekend filled with the kind of hospitality that turns first-time visitors into lifelong friends.
—Robb Report Studio, Robb Report, 23 Sep. 2025
Those studies, however, focused on older people and didn’t differentiate between former drinkers and lifelong nondrinkers, thus potentially skewing the results, study authors said.
—Sandee Lamotte, CNN Money, 23 Sep. 2025
See All Example Sentences for lifelong
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Marc Ramirez, USA Today, 23 Sep. 2025
The group stressed that autism is a lifelong, complex condition with no single cause or cure, and that premature claims about acetaminophen or leucovorin ignore decades of rigorous research and risk creating false hope and harm.
—Mary Kekatos, ABC News, 23 Sep. 2025
In celebration, the annual Grand Finale Dinner will feature an outstanding lineup of headlining chefs and sommeliers, capping off a weekend filled with the kind of hospitality that turns first-time visitors into lifelong friends.
—Robb Report Studio, Robb Report, 23 Sep. 2025
Those studies, however, focused on older people and didn’t differentiate between former drinkers and lifelong nondrinkers, thus potentially skewing the results, study authors said.
—Sandee Lamotte, CNN Money, 23 Sep. 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 29 Sep. 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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Merriam-Webster unabridged
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