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
Losing the protection of Black elite society that her parents had afforded her, and witnessing the contradiction between America’s actions abroad and at home, helped shape Moore’s lifelong advocacy for civil rights and for working-class concerns.
—
Dara T. Mathis, The Atlantic, 16 Dec. 2025
Graduation from one of the top 100 Chinese universities confers lifelong financial and professional benefits.
—Foreign Affairs, 16 Dec. 2025
In its first season, the show introduced Alex's support system, from his kids, to his lifelong best friend, John Sampson (Isaiah Mustafa), to his FBI contact, Kayla Craig (Alona Tal).
—Samantha Highfill, Entertainment Weekly, 16 Dec. 2025
The story follows the two, from childhood pen pals to roommates, rivals and lifelong confidantes.
—Dave Quinn, PEOPLE, 16 Dec. 2025
See All Example Sentences for lifelong
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Dara T. Mathis, The Atlantic, 16 Dec. 2025
Graduation from one of the top 100 Chinese universities confers lifelong financial and professional benefits.
—Foreign Affairs, 16 Dec. 2025
In its first season, the show introduced Alex's support system, from his kids, to his lifelong best friend, John Sampson (Isaiah Mustafa), to his FBI contact, Kayla Craig (Alona Tal).
—Samantha Highfill, Entertainment Weekly, 16 Dec. 2025
The story follows the two, from childhood pen pals to roommates, rivals and lifelong confidantes.
—Dave Quinn, PEOPLE, 16 Dec. 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 18 Dec. 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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