'seldom-changed' originates from the combination of 'seldom,' meaning 'rarely,' and 'changed,' the past participle of 'change,' meaning 'to make or become different.'

'seldom' comes from Old English 'seldan,' meaning 'rarely,' and 'changed' is derived from the Old French 'changier,' which means 'to alter or exchange.'

Initially, 'seldom' meant 'rarely' and 'changed' meant 'altered.' The combination retains the original meanings, emphasizing infrequency in alteration.