origin:  Greek; axiōmatikos= honorable
1. A fact that is self-evident (prima facie); unquestionably true; universally accepted point of reason without need of evidence or additional research.
2. A mathematic principle from whence theorems are derived based on a single or series of axioms (postulates) described as formulas, such as in ancient Greek geometry, the most famous of which is Euclidean.
“It is axiomatic that one death is a tragedy, a thousand is a statistic. So it was for Mi-ran. What she didn't realize is that her indifference was an acquired survival skill. In order to get through the 1990s alive, one had to suppress any impulse to share food. To avoid going insane, one had to learn to stop caring.” ― Barbara Demick, Nothing to Envy: Ordinary Lives in North Korea