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
But science writer Stephen S. Hall, whose latest book is called Slither, is a lifelong snake admirer.
—
Brianne Kane, Scientific American, 1 July 2025
Hannah Wilson’s cat Sunny was her lifelong companion through major life transitions, including her move to N.Y.C.
—Ashley Vega, People.com, 30 June 2025
Workplace policies that recognize the lifelong nature of disability caregiving are needed.
—Our Place, Forbes.com, 30 June 2025
Perez is a lifelong resident of Illinois and currently lives in state Senate District 42 with his wife and two children.
—R. Christian Smith, Chicago Tribune, 30 June 2025
See All Example Sentences for lifelong
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Brianne Kane, Scientific American, 1 July 2025
Hannah Wilson’s cat Sunny was her lifelong companion through major life transitions, including her move to N.Y.C.
—Ashley Vega, People.com, 30 June 2025
Workplace policies that recognize the lifelong nature of disability caregiving are needed.
—Our Place, Forbes.com, 30 June 2025
Perez is a lifelong resident of Illinois and currently lives in state Senate District 42 with his wife and two children.
—R. Christian Smith, Chicago Tribune, 30 June 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 8 Jul. 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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