lifelong
adj. C1 Advanced Oxford US //ˈɫaɪˈfɫɔŋ// UK //lˈaɪflɒŋ// life·long
adj. lasting for your whole life. You use this to describe a habit, a feeling, or a relationship that never ends.
adj. lasting or continuing through the entire duration of an individual's life. Often used to modify nouns representing personal commitments, interests, or relationships.
She has a lifelong passion for classical music.
The two scientists maintained a lifelong friendship after meeting during their first year of university.
The university's mission statement emphasizes the importance of fostering a lifelong commitment to learning that extends far beyond the completion of a formal degree.
From life + -long.
Usage
Typically used as an attributive adjective, appearing before the noun it modifies.