long-lasting Synonyms

durable prolonged long-lived lasting subacute sturdy strong stout steadfast stable made to last solid resilient reclaimable protracted persistent substantial tough long-drawn-out hard-wearing well-made monthlong longest long-standing long-term long-life heavy-duty unfading agelong never-ending unending undying persisting perpetual fixed firm extended everlasting eternal enduring diuturnal deathless continuing continued constant chronic ageless immutable imperishable permanent