lifelong

US /ˈlaɪf.lɑːŋ/
UK /ˈlaɪf.lɑːŋ/
"lifelong" picture
1.

lasting for the whole of a person's life

:
•
She has been my lifelong friend.
•
He has a lifelong passion for music.
:
permanentenduringlastingabidingconstant