lifelong

adjective

life·​long ˈlīf-ˌlȯŋ 

1

: lasting or continuing through life

a lifelong friendship

2

: long-standing

Examples of lifelong in a Sentence

He had a lifelong love of nature.

Recent Examples on the Web

Autism spectrum disorder, by contrast, is a lifelong neurodevelopmental disability that affects social reasoning, communication, perspective taking, and the interpretation of human relationships. — Walter Pavlo, Forbes.com, 25 July 2026

The 19-year-old defender, a lifelong fan of the club, made his first senior appearance on the final day of last season, coming on in the 91st minute of Huddersfield’s 4-0 win away to Wimbledon. — George Edwards, New York Times, 24 July 2026

Staten battles his own father, former Senator Sam Kirkland (Brett Cullen), who takes control of the family ranch, reigniting a lifelong feud between the stubborn father and son. — Bryan Alexander, USA Today, 24 July 2026

Terri Gomez, a 27-year veteran in higher education and a lifelong resident of the Inland Empire, is currently the provost and vice president for Academic Affairs at Cal Poly Pomona, a university statement said. — Andrew Khouri, Los Angeles Times, 23 July 2026

Word History

First Known Use

1613, in the meaning defined at sense 1

Rhymes for lifelong

• evensong
• livelong
• overlong
• vietcong
• agung
• along
• belong
• birdsong
• furlong
• headlong
• headstrong
• plainsong

Kids Definition

lifelong

adjective

life·​long ˈlī-ˌflȯŋ 

: continuing or lasting through life

a lifelong love for trees

a lifelong friendship