deadliness

The word 'deadliness' is a modern English formation built upon the native Germanic adjective 'deadly'. The core concept of 'dead' (Old English dēad) originates from the Proto-Germanic daudaz, itself from the Proto-Indo-European root dheu- meaning "to die, become senseless." The suffix '-ly' (Old English -līc) adds the meaning "having the character of," thus 'deadly' literally means "having the character of death." The final addition of the abstract noun-forming suffix '-ness', a prolific suffix in English from Old English, transforms the adjective into the quality or state of being deadly. Therefore, the etymological logic moves from the fundamental state of death, to the adjective describing something that possesses that character, and finally to the abstract noun naming that dangerous quality.

Structure: deadly (adjective) + ness (noun suffix) deadly: From Old English 'dēadlīc' (deadly, mortal). Origin: Germanic, from Proto-Germanic daudaz (dead) + -līkaz (having the form or character of). Functional role: Adjective base meaning 'causing or capable of causing death'. ness: From Old English '-nes', '-ness', a suffix forming abstract nouns of state or quality. Origin: Germanic, from Proto-Germanic -inassu. Functional role: Noun-forming suffix.