Open English Wordnet
Verbs
(v)eliminate, annihilate, extinguish, eradicate, wipe out, decimate, carry offkill in large numbers“the plague wiped out an entire population”
(v)kill, obliterate, wipe outmark for deletion, rub off, or erase“kill these lines in the President's speech”
(v)cancel out, wipe outwipe out the effect of something“The new tax effectively cancels out my raise”, “The ‘A’ will cancel out the ‘C’ on your record”