'seldom-confirmed' is a compound word formed from 'seldom' and 'confirmed'. 'Seldom' originates from Old English 'seldan', meaning 'rarely', and 'confirmed' comes from Latin 'confirmare', meaning 'to strengthen or establish'.

'Seldan' evolved into 'seldom' in Middle English, and 'confirmare' transformed into 'confirm' through Old French 'confirmer'.

Initially, 'seldom' meant 'rarely', and 'confirm' meant 'to establish'. The compound 'seldom-confirmed' retains these meanings, indicating something rarely established.