WordNet sense 1 (reduced to nothingness):

obliterated, blotted out

WordNet sense 2 (spoiled or ruined or demolished):

destroyed

WordNet sense 3 (mark for deletion, rub off, or erase):

kill, wipe out

WordNet sense 4 (make undecipherable or imperceptible by obscuring or concealing):

hide, obscure, veil, blot out

WordNet sense 5 (remove completely from recognition or memory):

efface