1. (verb) cancel officially

• annul
• countermand
• lift
• overturn
• repeal
• reverse
• revoke
• vacate

1. (verb) cancel officially

• cancel
• strike down

1. (verb) cancel officially

• go back on
• renege
• renege on
• renegue on

1. (verb) cancel officially

• abrogation
• abrogation
• annulment
• annulment
• repeal
• repeal
• change of mind
• flip-flop
• reversal
• turnabout
• turnaround
• contrary
• opposite
• reverse
• countermand
• recission
• recission
• rescission
• rescission
• reversible
• revocation
• vacation