'effectively-shown' is a compound word formed from 'effectively' and 'shown'. 'Effectively' originates from Latin, specifically the word 'effectivus', where 'effectus' meant 'accomplished'. 'Shown' is the past participle of 'show', which comes from Old English 'sceawian', meaning 'to look at'.

'effectively' evolved from the Latin 'effectivus' through Old French 'effectif', while 'shown' evolved from Old English 'sceawian'. The combination of these words into 'effectively-shown' is a modern English construct.

Initially, 'effectively' meant 'accomplished' and 'shown' meant 'to look at'. Over time, 'effectively-shown' evolved to mean 'demonstrated in a manner that achieves the desired result'.