'lanelessness' originates from English, specifically constructed from the noun 'lane' + the suffix '-less' meaning 'without' and the suffix '-ness' meaning 'state or quality'.

'lane' comes from Old English words such as 'lanu'/'lane' meaning 'track' or 'path'; the suffix '-less' derives from Old English 'lēas' meaning 'free from' or 'without'; '-ness' is a noun-forming suffix from Old English '-nes(s)a'. These elements combined in Modern English to form 'lanelessness'.

Initially it simply expressed the quality or condition of being without lanes; over time it has come to be used specifically in traffic and road-design contexts to describe roads or stretches of road lacking lane markings.