Verb - to destroy completely
Synonyms --Ebolish, Efface, Exterminate
Antonyms --Preserve, Protect, Rebuild
1) The Twin Towers were obliterated on 9/11/01, only ashes and dust remained.
2) I Obliterated a clay pigeon with a shotgun, it was fun seeing all the pieces fly everywhere.
Destruction of Alderaan