'effectively' originates from Latin, specifically the word 'effectivus,' where 'effectus' meant 'accomplished.' 'Changed' comes from Old French 'changier,' meaning 'to alter.'

'effectively' changed from the Latin word 'effectivus' and 'changed' from the Old French word 'changier,' eventually becoming the modern English phrase 'effectively-changed.'

Initially, 'effectively' meant 'accomplished' and 'changed' meant 'to alter,' but over time it evolved into its current meaning of 'altered in a way that produces a desired result.'