'almost-changed' originates from the combination of 'almost' and 'changed', where 'almost' means 'nearly' and 'changed' means 'made different'.

'almost' and 'changed' have been used in English since the Middle Ages, and their combination into 'almost-changed' is a modern construct to describe partial transformation.

Initially, 'almost' and 'changed' were used separately, but their combination now specifically describes something that is not fully transformed.