'progressively-established' originates from the combination of 'progressive' and 'established'. 'Progressive' comes from the Latin word 'progressivus', meaning 'moving forward', and 'established' comes from the Latin 'stabilire', meaning 'to make firm'.

'Progressive' evolved from the Latin 'progressivus' through Old French 'progressif', while 'established' evolved from the Latin 'stabilire' through Old French 'establir'.

Initially, 'progressive' meant 'moving forward', and 'established' meant 'to make firm'. Together, they evolved to describe something that becomes firm or recognized over time.