cardinal rule
cardinal rule · cardinal rules
A fundamental rule, upon which other matters hingeA fundamental rule, upon which other matters hinge.
» That's a cardinal rule of marriage.
Meaning
1 sensesA fundamental rule, upon which other matters hinge.
Examples
1 sentencesThat's a cardinal rule of marriage.
Forms
plural: cardinal rules| Singular | cardinal rule |
|---|---|
| Plural | cardinal rules |
regular