A person who works to change or improve something, especially social or political institutions that they see as unjust or wrong.
From reform (to change for the better) + -er (one who does something). Reform comes from Latin reformare meaning 'to shape again,' from re- (again) + formare (to shape).
History's most famous reformers like Martin Luther King Jr. and Malala Yousafzai show that one determined person can reshape society—they literally reform the world.
Complete word intelligence in one call. Free tier — 50 lookups/day.