'bloodlessness' originates from the word 'bloodless', which is derived from the Old English word 'blōd', meaning 'blood', combined with the suffix '-less', indicating 'without'.

'bloodless' evolved from the Old English 'blōdleas', which meant 'without blood', and eventually became the modern English word 'bloodless'.

Initially, it meant 'without blood', and this meaning has largely remained the same in modern usage.