Unarguability

Part of speech: noun

Definitions

1. The quality of being impossible to dispute or deny due to strong evidence or reasoning
2. the state of being irrefutable or unmistakable in terms of truth
3. the characteristic of presenting an undeniable assertion that is accepted without question

Etymology: Unarguability is a compound built in two steps. The base is "arguability", which came into English through Middle French "-ablete" and Latin "-abilitas", a chain of suffixes attached to the Latin verb "arguere" (to prove or make clear). That verb reached English through Old French "arguer" and Middle English "arguen," which is why "argue" once meant to demonstrate as well as to dispute. The prefix "un-" is native English, descending from a Proto-Germanic form that has been part of the language since Old English. Attaching it to "arguability" produced a word meaning the quality of being beyond dispute, so that a claim with this quality cannot be argued against.