OBLITERATE

[verb] [T] - to remove all sign of (something) either by destroying it or by covering it so that it cannot be seenThe missile strike was devastating - the target was totally obliterated.Centuries of wind and rain had obliterated the words carved on the gravestones.All of a sudden the view was obliterated by the fog.(figurative) Perhaps she gets drunk to obliterate (= forget) painful memories.