neonomian

from The Century Dictionary.

• noun One who holds that the old or Mosaic law is abolished and that the gospel is a new law. See Neonomianism.
• Relating to the Neonomians.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who advocates adheres to new laws; esp. one who holds or believes that the gospel is a new law.
• adjective Of or pertaining to the Neonomians, or in accordance with their doctrines.