postage-paid

The compound adjective 'postage-paid' is a modern bureaucratic formation that logically combines two established English words to describe a specific financial and logistical state. 'Postage' itself traces back to the system of relay stations for mail ('post'), with the '-age' suffix attaching the sense of a fee associated with that service. 'Paid' originates from the concept of pacifying a creditor by settling a debt. When combined, the term literally means "the fee for the mail service has been settled," a meaning that remains transparently connected to its modern use for pre-franked mail, labels, or reply envelopes where the sender has covered the cost in advance.

Structure: postage (noun) + paid (verb past participle) postage: From Latin 'ponere' (to place, put) via Old French 'poste' (a station, post) and English 'post' (mail system) + the English nominal suffix '-age' (denoting a charge or fee). It functions as the base noun specifying the subject of the payment. paid: From Latin 'pacare' (to appease, settle a debt) via Old French 'paier' and Middle English 'payen'. It functions as a past participle verb form indicating the completed action of settling the charge.