fulness

The word 'fulness' is a direct descendant from Old English fullnes, a compound of the adjective full and the noun-forming suffix -nes. The root full has a deep Proto-Germanic origin (fullaz) and is further traceable to the Proto-Indo-European (PIE) root pelə-, meaning "to fill." The suffix -ness is one of the most productive and enduring in English for creating abstract nouns that denote a state, condition, or quality. Thus, the literal construction "the state of being full" has remained semantically transparent and stable from its Old English origins to its modern use, primarily in formal or literary contexts, where it conveys completeness or abundance.

Structure: ful (full) + ness (state or quality) - ful: From Old English full (adj.), meaning "containing all that can be held; complete, entire." In this word, it functions as the adjectival root. - ness: From Old English -nes, -ness, a suffix forming abstract nouns of state or quality from adjectives. It functions as a noun-forming suffix.