'progressively-reached' originates from the combination of 'progressively,' which comes from the Latin 'progressivus,' meaning 'moving forward,' and 'reached,' from Old English 'ræcan,' meaning 'to stretch out or extend.'

'progressively' evolved from the Latin 'progressivus' through Middle English, while 'reached' transformed from Old English 'ræcan' to the modern English 'reach.'

Initially, 'progressively' meant 'moving forward,' and 'reached' meant 'to extend.' Over time, they combined to describe a gradual attainment.