Backspace          
Remove              
Cut out              
Obliterate
Expun
Cancel                
Omit                  
Efface
Demolish
Terminate
Revoke          
Eradicate
Blot out
Negate
Extinguish
Undo
Disengage
Erase
Abridge
Repudiate
Void
Retract
Abrogate
What is our purpose here, other than to regret things we cannot delete?