believing in a religion but not believing in certain practices that the religion mandates.
being too lazy or not caring enough to partake in certain practices that your religion requires/suggests.
Dude 1: did you hear Jimmy finally got some from his girlfriend last weekend.
Dude 2: But there not married yet, and they are both Catholic
Dude 1: its ok they are very liberaligious, they are ok with premarital sex
Jew 1: hey why are you ordering that, I don't think its kosher
Jew 2: Im liberaligious, I dont really care at this point.