An adjective describing something that lasts for the entirety of a person's life.

जीवनभर

English Usage: He made a lifelong commitment to education.

Hindi Usage: उसने शिक्षा के प्रति जीवनभर की प्रतिबद्धता बनाई।

To last the duration of a life.

जीवन की अवधि तक चलना.

English Usage: These memories will lifetime in my heart.

Hindi Usage: ये यादें मेरे दिल में जीवनभर रहेंगी।