verb

1. To put into a new and improved form or condition; to restore to a former good state, or bring from bad to good; to change from worse to better

   “1909, H. G. Wells, The History of Mr. Polly Chapter 9”

2. To return to a good state; to amend or correct one's own character or habits

   “It is hoped that many criminals, upon being freed, will eventually reform.”

3. To form again or in a new configuration.

   “The regiment reformed after surviving the first attack.”

Synonyms: amend, better, correct, improve, mend, reclaim, rectify, repair

adjective

1. Corrected; amended; restored to purity or excellence; said, specifically, of the whole body of Protestant churches originating in the Reformation, or, in a more restricted sense, of those who separated from Martin Luther on the doctrine of consubstantiation, etc., and carried the Reformation, as they claimed, to a higher point.

2. Amended in character and life.

   “a reformed gambler or drunkard”

3. (of an officer) Retained in service on half or full pay after the disbandment of the company or troop.