Anything imperishable is made to last, like a marble statue or true love. Imperishable things endure.
To perish is to die. Things that are imperishable don't. You may have heard of perishable food, the kind that will go bad eventually, like fresh fruit or a ham sandwich. Imperishable foods will always be fine to eat, like a bag of dried beans. There can also be imperishable ideas and beliefs, like imperishable hope or imperishable truth. Certain heroes like James Bond seem to be imperishable, especially in the movie Never Say Die.