annul Synonyms

rescind reverse revoke nullify repeal invalidate lift cancel avoid overturn countermand vacate abrogate quash void destroy stop superseding terminate unbuild undo unmake unmarry stet spoliate ruinate prorogate quashing recall recant remove call off rescinding rescission retract reversing veto vitiate outmode break even counter check vandalise stamp out pull the plug plagiarise cancel out strikeout unclip unwire watergate