Synonyms of principium

1 Syllable
rule, base, truth, ground
2 Syllables
cause, guide, maxim, precept, source, canon, reason, theorem, axiom, theorems
3 Syllables
usage, assumption, origin, criterion, proposal, formula, foundation, principle
4 Syllables
exigency, postulate, proposition, fundamental, regulation
6 Syllables
generalization