Reinstatement

Noun

 * 1) The act of restoring something to its previous state.
 * Many people are unhappy with the sacking of the chief constable and demand his immediate reinstatement.

Thesaurus
about-face, backing, backsliding, clearance, clearing, destigmatization, destigmatizing, disenchantment, exculpation, explanation, flip-flop, improvement, instauration, justification, lapse, purgation, purging, rationalization, reactivation, recidivation, recidivism, reclamation, reconstitution, reconversion, redintegration, reenactment, reestablishment, reformation, regress, regression, rehabilitation, reinstation, reinstitution, reinvestiture, reinvestment, relapse, replacement, restitution, restoration, retrocession, retrogradation, retrogression, retroversion, return, returning, reversal, reverse, reversion, reverting, revulsion, slipping back, turn, turnabout, vindication

Etymology
From reinstate + -ment.