'seldom-delivered' originates from the combination of 'seldom' and 'delivered', where 'seldom' means 'not often' and 'delivered' means 'provided or fulfilled'.

'seldom' comes from Old English 'seldan', and 'delivered' from Old French 'delivrer', which transformed into the modern English word 'deliver'.

Initially, 'seldom' meant 'rarely', and 'delivered' meant 'to hand over'. The combined term 'seldom-delivered' retains the meaning of 'rarely provided'.