Meaning

verb formally reject or disavow a formerly held belief, usually under pressure

originFrom Late Middle English abjuren (“to give up (something); to recant or renounce (something) under oath”), from Anglo-Norman abjurer, Middle French abiurer, abjurer, and Old French abjurer (“to reject or renounce (something) on oath”) (modern French abjurer), and from their etymon Latin abiūrāre, the present active infinitive of abiūrō (“to deny on oath, recant, renounce, repudiate, abjure”),…

Etymology from Wiktionary, CC BY-SA 3.0