Webster's Revised Unabridged Dictionary · 1913

Obliterate

Obliterate , transitive verb

[Latin obliteratus, past participle of obliterare to obliterate; ob (see Ob-) + litera, littera, letter. See Letter.]

1.
To erase or blot out; to efface; to render undecipherable, as a writing.
2.
To wear out; to remove or destroy utterly by any means; to render imperceptible; as, to obliterate ideas; to obliterate the monuments of antiquity.
The harsh and bitter feelings of this or that experience are slowly obliterated. — W. Black

Obliterate , adjective

(Zoology) Scarcely distinct; -- applied to the markings of insects.