General Antonyms:
* Executive: This refers to the branch of government responsible for carrying out laws.
* Judicial: This refers to the branch of government responsible for interpreting laws.
* Non-legislative: This broadly means anything that is not related to lawmaking.
Contextual Antonyms:
* Unlegislative: This implies something that goes against the principles of lawmaking.
* Non-binding: This describes something that doesn't have the force of law.
* Informal: This is the opposite of formal lawmaking processes.
The best antonym depends on the specific meaning you want to convey.