abjure
ab.jure \ab-'ju.(*)r\ vt [ME abjuren, fr. MF or L; MF abjurer, fr. L abjurare, fr. ]ab- + jurare to swear - more at JURY 1a: to renounce upon oath 1b: to reject solemnly : RECANT 2: to abstain from : AVOID CT mean to withdraw a vow or given word. ABJURE implies a firm and final rejecting or abandoning often made under oath; RENOUNCE often equals ABJURE but may carry the meaning of disclaim or disown; FORSWEAR may add to ABJURE an implication of perjury or betrayal; RECANT stresses the withdrawing or denying of something professed or taught; RETRACT applies to the withdrawing of a promise, an offer, or an accusation - ab.jur.er n SYN syn ABJURE, RENOUNCE, FORSWEAR, RECANT, RETRA
Webster's English Dictionary