If you've misspelled "reformacion", fear not! The correct term in English would be "reformation". Other alternative suggestions could include "reform" or "reforming". Don't worry about the small slip-up – we all make mistakes!
reformation The reformation of the legal system was a long and difficult process.
Reformation The Protestant Reformation was a major religious movement in the 16th century that led to the establishment of Protestantism as a separate branch of Christianity.