lifelong.
Extending for the entire duration of life.
Meaning & usage
Extending for the entire duration of life.
They were lifelong friends; they met in elementary school and ended their lives in the same rest home.
my lifelong romance with football since I was a toddler
Where this word comes from
Etymology tree Proto-Indo-European *leyp- Proto-Germanic *lībanąder. Proto-Germanic *lībą Proto-West Germanic *līb Old English līf Middle English lyf English life Proto-Indo-European *dlongʰos Proto-Germanic *langaz Proto-West Germanic *lang Old English lang Middle English long English long English -long English lifelong From life + -long.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.