revert
1. [ verb ] go back to a previous state
Synonyms: return turn_back retrovert regress
Examples:

"We reverted to the old rules"

Related terms: change_by_reversal recover relapse resile return backsliding regression
2. [ verb ] undergo reversion, as in a mutation
Related terms: mutate
Similar spelling:   reverting
  Reppert
  report
  repertory
  revered
  rebirth
  reporter
  reported
  repartee
  reporting
  reportage