• Definition for "cardinal rule"
    • significant rule, upon which various other things hinge.
    • View More
  • Sentence for "cardinal rule"
  • Urban Dictionary for "cardinal rule"
    • The Cardinal Rule an amazing guideline…
    • View More

cardinal rule definition

  • noun:
    • significant rule, upon which various other things hinge.
29 votes

How would you define cardinal rule?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!