deraignment

from The Century Dictionary.

• noun In old English law, the act of deraigning; proof; justification.
• noun The act of disordering or disarranging; a turning out of course.
• noun A renunciation, as of religious or monastic vows.

from the GNU version of the Collaborative International Dictionary of English.

• noun obsolete The act of deraigning.
• noun obsolete The renunciation of religious or monastic vows.