(verb trans.)

1. to renounce, repudiate, or retract, esp. with formal solemnity; recant: to abjure one’s errors.
2. to renounce or give up under oath; forswear: to abjure allegiance.
3. to avoid or shun.

word’s encounter: in confusion with adjure from Henry James’s Portrait of a Lady.
word’s use: I abjure one’s use of the rather ugly abjure