'expectedly-proven' is a compound word formed from 'expectedly' and 'proven'. 'Expectedly' originates from the Latin 'expectare', meaning 'to look out for', and 'proven' comes from the Latin 'probare', meaning 'to test or prove'.

'Expectedly' evolved from the Old French 'expecter', and 'proven' from the Old French 'prover', both of which were adopted into Middle English.

Initially, 'expectedly' meant 'in a manner that is anticipated', and 'proven' meant 'tested and confirmed'. The compound retains these meanings.