To improve by alteration, correction of error, or removal of defects; put into a better form or condition. To abolish abuse or malpractice in: reform the government. To put an end to (a wrong). See Synonyms at correct. To cause (a person) to give up harmful or immoral practices; persuade to adopt a better way of life. To change for the better. A change for the better; an improvement. Correction of evils, abuses, or errors. Action to improve social or economic conditions without radical or revolutionary change. Relating to or favoring reform: a reform candidate for mayor. Of or relating to Reform Judaism.