'Effortless' originates from the word 'effort' combined with the suffix '-less', where 'effort' meant 'exertion of physical or mental energy' and '-less' meant 'without'.

'Effort' comes from the Old French word 'esforz', which transformed into the Middle English 'effort', and eventually became the modern English word 'effortless' with the addition of '-less'.

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