According to custom or rule or natural law(adjective)
WordNet. Princeton University. 2010.
Use "rule-governed" in a sentence
"Along with Jerome Bruner who helped foment the cognitive revolution and brough meaning back into experimental psychology, Kahneman & Tversky brought back the idea of rule-governed complex irrationality."
"And the Commission's ambition to create a credible, transparent and rule-governed system for imposing losses on creditors of a failing or failed bank without disrupting the larger financial system is vital to reducing moral hazard."
"They would be more rule-governed and probably count that as a virtue. [emphasis added]"