Definition of unobliteratable in US English:

unobliteratable

adjective

rare
  • Incapable of being obliterated.

Origin

Late 19th century; earliest use found in William Honyman Gillespie (1808–1875). From un- + obliterate + -able.

Pronunciation

unobliteratable

/(ˌ)ʌnəˈblɪtəreɪtəbl/