nethermost

The word 'nethermost' is a superlative construction built upon the ancient comparative root 'nether'. 'Nether' itself descends from the Proto-Germanic nitheraz, meaning "lower down", which is derived from the Proto-Indo-European root ni-, indicating a downward motion. By attaching the Old English superlative suffix '-most', directly akin to '-est', the word forms a double superlative, intensifying the sense of lowness to its extreme. Thus, the literal "most lower" evolved into the modern, abstract meaning of "lowest possible" or "farthest down," often used in literary or formal contexts to describe the absolute bottom in a physical or hierarchical sense.

Structure: nether (down) + most (superlative suffix) - nether: From Old English neothera, niothera (lower, under), comparative form related to neothan (downward). Its functional role is the core adjective meaning "lower". - most: From Old English -mest, a superlative suffix, related to mǣst (most). Its functional role is to form the superlative degree of the adjective.