perdurable

\pur-DUR-uh-bul;\, adjective:
Extremely durable; lasting; continuing long.

--George wanted to seem smart, so instead of calling the garbage cans "extremely durable," he called them "perdurable."
--Ah, my son, there is nothing so perdurable as the love of a Norseman.
--After 200 years had passed, Frank's ghost was now beginning to regret not shelling out an extra fifty for a PERdurable tombstone.
--To prove the perdurability of these scientific assertions, I am going to rub doody all over them. (Rubs doody all over them.) See? They still hold true, even with doody all over them.