Definition of lifelong
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.
First Known Use of lifelong
LIFELONG Defined for English Language Learners
Definition of lifelong for English Language Learners
: continuing or lasting through a person's life
LIFELONG Defined for Kids
Definition of lifelong for Students
: continuing through life a lifelong friendship
Seen and Heard
What made you want to look up lifelong? Please tell us where you read or heard it (including the quote, if possible).