'equalitarianism' originates from the Latin word 'aequalis,' meaning 'equal,' combined with the suffix '-ism,' denoting a belief or principle.

'Equalitarianism' evolved from the French word 'égalitaire,' which was adapted into English as 'equalitarian,' eventually forming 'equalitarianism.'

Initially, it meant 'the belief in equality,' and this meaning has largely remained the same in modern usage.