sourceless

the word 'sourceless' is a modern english formation built upon the well-established noun 'source'. the noun 'source' entered english from old french, tracing back to the latin verb 'surgere', meaning to rise, which metaphorically extended to the point of origin or beginning, like a spring rising from the ground. the suffix '-less', of old english origin, is a prolific adjective-forming element denoting absence. therefore, the literal construction 'source + less' logically yields the meaning 'devoid of a source or point of origin'. this compound elegantly conveys the abstract concept of something being unattributable or lacking a discernible beginning.

Structure: source + less source (from old french 'sourse', meaning a rising, beginning, fountainhead; ultimately from latin 'surgere', to rise) + less (from old english '-lēas', meaning devoid of, free from)