The word 'tautness' is a relatively modern English formation, built upon the adjective 'taut' which entered the language in the late Middle English period. 'Taut' itself is maritime in origin, likely borrowed from a Scandinavian source like Old Norse, relating to the discipline and tightness of ship's rigging. The suffix '-ness' is a native English element from Proto-Germanic, used since Old English to create nouns expressing abstract states. Thus, 'tautness' logically combines the concept of physical or emotional tightness with the abstract suffix to formally denote the condition of being taut.

Structure: taut (tight) + ness (state or quality) - taut: From Middle English tought, likely of Scandinavian origin (e.g., Old Norse þǫgull 'tight, disciplined'). Its functional role is as the adjectival root meaning 'tightly drawn'. - ness: From Old English -nes(s), a noun-forming suffix denoting a state, condition, or quality. Its functional role is to convert the adjective into an abstract noun.