abjuration

noun

Etymology: First attested around 1439. From Middle English abjuracioun, from Latin abiūrātiō (“forswearing, abjuration”), from ab (“from, away from”) + iūrō (“swear or take an oath”), from iūs (“law, right, duty”). Compare French abjuration.

1. A solemn recantation or renunciation on oath; as, an abjuration of heresy.
2. A repudiation on oath of a religious or political principle.
3. The act of abjuring.