abjure
Concise Oxford English Dictionary © 2008 Oxford University Press:
abjure /əbˈdʒʊə, əbˈdʒɔː/
▶verb formal solemnly renounce (a belief or claim).
– phrases
abjure the realm historical swear an oath to leave a country forever.
abjure the realm historical swear an oath to leave a country forever.
– derivatives
abjuration noun.
abjuration noun.
– origin ME: from L. abjurare, from ab- ‘away’ + jurare ‘swear’.
'abjure' also found in these Oxford entries:

