The Collaborative International Dictionary
Undestroyable
Undestroyable \Un`de*stroy"a*ble\, a. Indestructible.
Wiktionary
undestroyable
a. Not able to be destroyed; indestructible.
WordNet
undestroyable
adj. very long lasting; "less durable rocks were gradually worn away to form valleys"; "the perdurable granite of the ancient Appalachian spine of the continent" [syn: durable, indestructible, perdurable]
not capable of being destroyed