Imperishable :: Imperishable (a.) Not perishable; not subject to decay; indestructible; enduring permanently; as, an imperishable monument; imperishable renown..
Perishable :: Perishable (a.) Liable to perish; subject to decay, destruction, or death; as, perishable goods; our perishable bodies..
Perishableness :: Perishableness (n.) The quality or state of being perishable; liability to decay or destruction.
Perishably :: Perishably (adv.) In a perishable degree or manner.