'discreetly-delivered' originates from the combination of 'discreetly' and 'delivered'. 'Discreetly' comes from the Latin word 'discretus', meaning 'separated' or 'distinguished', and 'delivered' comes from the Old French 'delivrer', meaning 'to set free'.

'Discreetly' evolved from the Latin 'discretus' through Old French 'discret', while 'delivered' evolved from Old French 'delivrer'. The combination of these words into 'discreetly-delivered' is a modern English construct.

Initially, 'discreetly' meant 'separated' or 'distinguished', but over time it evolved to mean 'careful' or 'unobtrusive'. 'Delivered' has largely retained its meaning of 'to bring or hand over'.