The word 'weirdness' is built upon the adjective 'weird', whose journey to its modern meaning is particularly fascinating. It originates from the Old English noun wyrd, meaning "fate" or "destiny," a concept central to Germanic and Norse mythology, where the Weird Sisters were the goddesses of fate. Over time, through association with the supernatural and the uncanny power to control destiny, 'weird' evolved to describe anything eerie, mysterious, or seemingly outside natural laws. The suffix '-ness', a prolific and ancient English morpheme for forming abstract nouns, is then appended to create 'weirdness', formally denoting the state or quality of being strange, uncanny, or unsettling.

Structure: weird (strange) + ness (state or quality) - weird: From Old English wyrd (fate, destiny), of Germanic origin. - ness: A noun-forming suffix from Old English -nes, -nis, used to form abstract nouns indicating a state or quality.