in for the long haul

abiding continuing deep-rooted durable eternal everlasting indelible lifelong long-term longstanding permanent stable

persisting

constant continual endless forever incessant indissoluble inexhaustible inexpungible old perdurable perennial perpetual till the cows come home unceasing undying unremitting

ending ephemeral impermanent temporary transient

ceasing fleeting passing short-lived

durable enduring long-lasting perpetual stable

everlasting invariable perennial set

abiding changeless continual diurnal fixed for keeps forever forever and a day immutable imperishable indestructible perdurable perduring persistent set in concrete set in stone steadfast unchanging unfading

temporary

changing

ephemeral