'methodically-changed' originates from the combination of 'methodically' and 'changed', where 'methodically' comes from 'method' meaning 'a systematic way of doing something' and 'changed' from 'change' meaning 'to make or become different'.

'methodically' evolved from the Latin word 'methodus', and 'changed' from the Old French word 'changier', eventually forming the modern English term 'methodically-changed'.

Initially, 'methodically' meant 'in a systematic way', and 'changed' meant 'to make different'. Together, they convey the idea of systematic alteration.