WordReference Random House Unabridged Dictionary of American English © 2026
first′ prin′ciple,
- any axiom, law, or abstraction assumed and regarded as representing the highest possible degree of generalization.
'first principles' also found in these entries (note: many are not synonyms or translations):
element
- elemental
- elementary
- empirical
- ground
- metaphysic
- metaphysical
- metaphysics
- reason
- rudiment
- rudimentary