Nullify

verb to officially end or put an end to something, such as a law or system

• The government decided to abolish the outdated law.
• Let's abolish the rule that says we can't bring food into the library.
• I say we abolish this dumb curfew.
• She wanted to abolish all negative thoughts from her mind.

verb to officially end or cancel (a law, agreement, or practice)

• The government decided to abrogate the treaty that had been in place for decades.
• I heard they're going to abrogate the old rules and start fresh.
• They're planning to totally abrogate that outdated law.
• Sometimes we need to abrogate our own limiting beliefs to move forward in life.

noun the act of repealing or abolishing a law, right, or agreement

• The abrogation of the treaty caused tensions between the two countries.
• The abrogation of the rule made everyone happy.
• They tried to pull a fast one with the abrogation, but it didn't work.
• The abrogation of her promise left a gaping hole in their relationship.