unarguable

The word 'unarguable' is a Modern English formation built upon the established adjective 'arguable'. The core root 'argu-' originates from the Latin verb 'arguere', which carried meanings of making something clear, proving, or asserting. This Latin term is thought to possibly derive from a Proto-Indo-European root meaning "to shine, be white, clear". The suffix '-able', of Latin origin via French, attaches to verbs to form adjectives meaning "capable of". The negative prefix 'un-', of Old English origin, is then added to negate the entire concept, creating a word that literally means "not capable of being argued". The semantic evolution moved from the idea of making a clear proof in Latin to the modern sense of a point so definitively true that it cannot be contested.