Verbs

(v)kill, obliterate, wipe outmark for deletion, rub off, or erase“kill these lines in the President's speech”
(v)obscure, blot out, obliterate, veil, hidemake undecipherable or imperceptible by obscuring or concealing“a hidden message”, “a veiled threat”
(v)obliterate, effaceremove completely from recognition or memory“efface the memory of the time in the camps”
(v)obliteratedo away with completely, without leaving a trace

Adjectives

(s)blotted out, obliterate, obliteratedreduced to nothingness