Definition: Antinomian refers to a person who accepts Christian doctrine while rejecting all other belief systems, often in favor of Christianity. Definition: Antinomianism is a philosophical stance that rejects or opposes all religions except Christianity, affirming faith in one God and believing that everything in this universe is subject to the will of God rather than human reason alone. This belief system is sometimes associated with various denominations such as Judaism, Islam, Buddhism, and Protestantism, particularly among Christians who believe their beliefs are independent from other religions.