1) Aphoristic 2) Axiomatic 3) Postulational 4) Proposition 1) Postulational 
• (a.) Of or pertaining to an axiom; having the nature of an axiom; self-evident; characterized by axioms.
Of or pertaining to an axiom; having the nature of an axiom; self-evident; characterised by axioms. ... (12 Mar 1998) ... 
axiomatical, axiomatically 1. Having the nature of an axiom; self-evident; characterized by axioms. 2. By the use of axioms; in the form of an axiom; such as, a statement or principle which is generally accepted to be true, but is not necessarily so. 3. A formal statement or principle in mathematics, science, etc., from which other statements can...