If someone in a position of authority abrogates something such as a law, agreement, or practice, they put an end to it. [formal]
The next prime minister could abrogate the treaty. [VERB noun]
Synonyms: revoke, end, recall, withdraw
abrogation (æbrəgeɪʃən ) uncountable noun [NOUN of noun] ...a dereliction of duty and an abrogation of responsibility.
Synonyms: revocation, ending, withdrawal, scrapping [informal]