A fixed or established principle, an axiom; a verified fact. Sometimes coloured by sense A. 6a. Cf. sense A. 5b, for a truth at phrases 1b, of a truth…

Law. A proposition (ostensibly) expressing a general rule of law, or of equity (see equity, n. 4a).

A positive statement; a declaration, averment. †head assertion (obsolete): a fundamental principle, an axiom.

A maxim, an axiom; (perhaps also) an aphorism. Obsolete. rare.

A principle or rule of law or conduct; an axiom. Cf. maxim, n.1 Obsolete.

A proposition that commends itself to general acceptance; a well-established or universally-conceded principle; a maxim, rule, law.

Something which is self-evident, esp. a proposition which requires no proof or explanation. Also with the: that which is self-evident; the obvious.

A self-evident truth, esp. one of minor importance; a statement so obviously true as not to require or deserve discussion. Also: a proposition…

A proposition or assumption taken to be self-evident or obvious; an axiom.