'accidentally-proven' originates from the combination of 'accidentally,' derived from Latin 'accidentalis,' meaning 'happening by chance,' and 'proven,' from Old English 'prōfian,' meaning 'to test or prove.'

'accidentally' evolved from the Latin 'accidentalis' through Old French 'accidental,' while 'proven' transformed from Old English 'prōfian' to the modern English 'prove.'

Initially, 'accidentally' meant 'by chance,' and 'proven' meant 'tested or verified.' The combined term retains these meanings, emphasizing unintentional verification.