adjective
cardinal
Of primary or fundamental importance.
Honesty is a cardinal principle of the organization's work.
Etymology
Latin cardo means hinge. Something cardinal is what an argument, system, or undertaking turns on, making the physical pivot an image for fundamental importance.
More examples
- The compass marks the four cardinal directions.
- The report identifies several cardinal errors.
- Safety remains a matter of cardinal importance.
Similar words
- fundamental
- Emphasizes a basic foundation rather than directional usage.
- principal
- Emphasizes highest importance among several competing considerations.