What is another word for "nullify"?

Roget's Thesaurus (1911) lists these synonyms for "nullify": account, and, application, apply, arrear, aside, back, bad, bank, bankrupt, bankruptcy, become, behind, behindhand, bogus, both, break, button, cancel, check, cheque, close, coach, debt, debtor, declare, defalcation, default, defaulter, discard, dishonor, disobedience, draw, drive, duck, elude, elusive, evade, evasion, evasive.