liberalize
1. [ verb ] (law) make liberal or more liberal, of laws and rules
Synonyms: liberalise
Related terms: change decontrol liberalise liberalization
2. [ verb ] become more liberal
Synonyms: liberalise
Examples:

"The laws liberalized after Prohibition"

Related terms: change
Similar spelling:   liberal
  liberalise
  liberality
  liberalism
  liberalness
  liberally
  liberalistic
  liberal_arts
  Liberal_Party