verb
abjure
ub-JOOR/əbˈdʒʊr/
To formally give up or solemnly reject something.
The woman solemnly abjures gambling as she cuts up her playing cards.

Etymology
“Away” and “swear” express rejecting something under oath. Originally used especially for formally recanting a heresy, abjure also means solemnly giving up a belief, claim, or practice.
In context
But rather clinging to a cureless woe, All hope do I abjure for evermore.
More examples
- She refused to abjure her beliefs under pressure.
- The witness formally abjured his earlier allegiance.
- He signed a statement abjuring the use of force.
Forms
abjure · abjures · abjured · abjuring