obliterate
v.
c.1600, from Latin obliteratus, past participle of obliterare "cause to disappear, blot out, erase, efface," figuratively "cause to be forgotten," from ob "against" (see ob-) + littera (also litera) "letter, script" (see letter, n.); abstracted from phrase literas scribere "write across letters, strike out letters." Related: Obliterated; obliterating.
〔李〕[ob-;liter;-atev.] v.涂去； 擦掉； 使消失； 除去 ←liter (L liter)=letter 字母
〔蒋〕[ob-离，去掉，liter字，字母→字迹，-ate动词后缀;’把字迹涂掉”] 涂抹，擦去，删除