axiomatic, self-evident, taken for granted -- (evident without proof or argument; "an axiomatic truth"; "we hold these truths to be self-evident")
axiomatic, aphoristic -- (containing aphorisms or maxims; "axiomatic wisdom")
axiomatic, axiomatical, postulational -- (of or relating to or derived from axioms; "axiomatic physics"; "the postulational method was applied to geometry"- S.S.Stevens)
(Sound)
