modify,
alter,
change make less severe or harsh or extreme; "please modify this letter to make it more polite"; "he modified his views on same-gender marriage"
decontrol relax or remove controls of; "decontrol marijuana"
liberalise -
become more liberal; "The laws liberalized after Prohibition"
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"
