1.
antinomy; mutual contradiction; paradox
A situation where two propositions or principles, each appearing valid in itself, are mutually contradictory; an irreconcilable conflict between two equally reasonable positions.
The antinomy between freedom and equality is an important topic in philosophy.
Origin: This is a Japanese translation of the philosophical term "antinomy" (from Greek). It was notably used by the German philosopher Immanuel Kant to describe contradictions in pure reason.
Structure: 二 (two) + 律 (laws/principles) + 背 (against) + 反 (oppose). Literally: two laws opposing each other.
Usage: Used in philosophical, academic, and general contexts to describe situations where two principles or goals conflict with each other.