Undestroyable a. : Indestructible.

Example:
Matter and Energy, Undestroyable?

Taxonomy
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Defination from the web:
Undestroyable in the Online Dictionary. Meaning of Undestroyable. Pronunciation of Undestroyable. Translations of Undestroyable. ... undestroyable - very long lasting; "less durable rocks were gradually worn away to form valleys"; "the perdurable granite of the ancient ...